diff --git a/browser/components/migration/content/migration-wizard.mjs b/browser/components/migration/content/migration-wizard.mjs
index 89872a155875..9d58fbe95f1d 100644
--- a/browser/components/migration/content/migration-wizard.mjs
+++ b/browser/components/migration/content/migration-wizard.mjs
@@ -333,6 +333,7 @@ export class MigrationWizard extends HTMLElement {
     this.#getPermissionsButton.addEventListener("click", this);
 
     this.#browserProfileSelector.addEventListener("click", this);
+    this.#browserProfileSelector.addEventListener("mousedown", this);
     this.#resourceTypeList = shadow.querySelector("#resource-type-list");
     this.#resourceTypeList.addEventListener("change", this);
 
@@ -1396,107 +1397,122 @@ export class MigrationWizard extends HTMLElement {
     }
   }
 
+  #handleClickEvent(event) {
+    if (
+      event.target == this.#importButton ||
+      event.target == this.#importFromFileButton
+    ) {
+      this.#doImport();
+    } else if (
+      event.target.classList.contains("cancel-close") ||
+      event.target.classList.contains("finish-button")
+    ) {
+      this.dispatchEvent(
+        new CustomEvent("MigrationWizard:Close", { bubbles: true })
+      );
+    } else if (
+      event.currentTarget == this.#browserProfileSelectorList &&
+      event.target != this.#browserProfileSelectorList
+    ) {
+      this.#onBrowserProfileSelectionChanged(event.target);
+      // If the user selected a file migration type from the selector, we'll
+      // help the user out by immediately starting the file migration flow,
+      // rather than waiting for them to click the "Select File".
+      if (
+        event.target.getAttribute("type") ==
+        MigrationWizardConstants.MIGRATOR_TYPES.FILE
+      ) {
+        this.#doImport();
+      }
+    } else if (event.target == this.#safariPermissionButton) {
+      this.#requestSafariPermissions();
+    } else if (event.currentTarget == this.#resourceSummary) {
+      this.#expandedDetails = true;
+    } else if (event.target == this.#chooseImportFromFile) {
+      this.dispatchEvent(
+        new CustomEvent("MigrationWizard:RequestState", {
+          bubbles: true,
+          detail: {
+            allowOnlyFileMigrators: true,
+          },
+        })
+      );
+    } else if (event.target == this.#safariPasswordImportSkipButton) {
+      // If the user chose to skip importing passwords from Safari, we
+      // programmatically uncheck the PASSWORDS resource type and re-request
+      // import.
+      let checkbox = this.#shadowRoot.querySelector(
+        `label[data-resource-type="${MigrationWizardConstants.DISPLAYED_RESOURCE_TYPES.PASSWORDS}"]`
+      ).control;
+      checkbox.checked = false;
+
+      // If there are no other checked checkboxes, go back to the selection
+      // screen.
+      let checked = this.#shadowRoot.querySelectorAll(
+        `label[data-resource-type] > input:checked`
+      ).length;
+
+      if (!checked) {
+        this.requestState();
+      } else {
+        this.#doImport();
+      }
+    } else if (event.target == this.#safariPasswordImportSelectButton) {
+      this.#selectSafariPasswordFile();
+    } else if (event.target == this.#extensionsSuccessLink) {
+      this.dispatchEvent(
+        new CustomEvent("MigrationWizard:OpenAboutAddons", {
+          bubbles: true,
+        })
+      );
+      event.preventDefault();
+    } else if (event.target == this.#getPermissionsButton) {
+      this.#getPermissions();
+    }
+  }
+
+  #handleChangeEvent(event) {
+    if (event.target == this.#browserProfileSelector) {
+      this.#onBrowserProfileSelectionChanged();
+    } else if (event.target == this.#selectAllCheckbox) {
+      let checkboxes = this.#shadowRoot.querySelectorAll(
+        'label[data-resource-type]:not([hidden]) > input[type="checkbox"]'
+      );
+      for (let checkbox of checkboxes) {
+        checkbox.checked = this.#selectAllCheckbox.checked;
+      }
+      this.#displaySelectedResources();
+    } else {
+      let checkboxes = this.#shadowRoot.querySelectorAll(
+        'label[data-resource-type]:not([hidden]) > input[type="checkbox"]'
+      );
+
+      let allVisibleChecked = Array.from(checkboxes).every(checkbox => {
+        return checkbox.checked;
+      });
+
+      this.#selectAllCheckbox.checked = allVisibleChecked;
+      this.#displaySelectedResources();
+    }
+  }
+
   handleEvent(event) {
+    if (
+      event.target == this.#browserProfileSelector &&
+      (event.type == "mousedown" ||
+        (event.type == "click" &&
+          event.mozInputSource == MouseEvent.MOZ_SOURCE_KEYBOARD))
+    ) {
+      this.#browserProfileSelectorList.toggle(event);
+      return;
+    }
     switch (event.type) {
       case "click": {
-        if (
-          event.target == this.#importButton ||
-          event.target == this.#importFromFileButton
-        ) {
-          this.#doImport();
-        } else if (
-          event.target.classList.contains("cancel-close") ||
-          event.target.classList.contains("finish-button")
-        ) {
-          this.dispatchEvent(
-            new CustomEvent("MigrationWizard:Close", { bubbles: true })
-          );
-        } else if (event.target == this.#browserProfileSelector) {
-          this.#browserProfileSelectorList.show(event);
-        } else if (
-          event.currentTarget == this.#browserProfileSelectorList &&
-          event.target != this.#browserProfileSelectorList
-        ) {
-          this.#onBrowserProfileSelectionChanged(event.target);
-          // If the user selected a file migration type from the selector, we'll
-          // help the user out by immediately starting the file migration flow,
-          // rather than waiting for them to click the "Select File".
-          if (
-            event.target.getAttribute("type") ==
-            MigrationWizardConstants.MIGRATOR_TYPES.FILE
-          ) {
-            this.#doImport();
-          }
-        } else if (event.target == this.#safariPermissionButton) {
-          this.#requestSafariPermissions();
-        } else if (event.currentTarget == this.#resourceSummary) {
-          this.#expandedDetails = true;
-        } else if (event.target == this.#chooseImportFromFile) {
-          this.dispatchEvent(
-            new CustomEvent("MigrationWizard:RequestState", {
-              bubbles: true,
-              detail: {
-                allowOnlyFileMigrators: true,
-              },
-            })
-          );
-        } else if (event.target == this.#safariPasswordImportSkipButton) {
-          // If the user chose to skip importing passwords from Safari, we
-          // programmatically uncheck the PASSWORDS resource type and re-request
-          // import.
-          let checkbox = this.#shadowRoot.querySelector(
-            `label[data-resource-type="${MigrationWizardConstants.DISPLAYED_RESOURCE_TYPES.PASSWORDS}"]`
-          ).control;
-          checkbox.checked = false;
-
-          // If there are no other checked checkboxes, go back to the selection
-          // screen.
-          let checked = this.#shadowRoot.querySelectorAll(
-            `label[data-resource-type] > input:checked`
-          ).length;
-
-          if (!checked) {
-            this.requestState();
-          } else {
-            this.#doImport();
-          }
-        } else if (event.target == this.#safariPasswordImportSelectButton) {
-          this.#selectSafariPasswordFile();
-        } else if (event.target == this.#extensionsSuccessLink) {
-          this.dispatchEvent(
-            new CustomEvent("MigrationWizard:OpenAboutAddons", {
-              bubbles: true,
-            })
-          );
-          event.preventDefault();
-        } else if (event.target == this.#getPermissionsButton) {
-          this.#getPermissions();
-        }
+        this.#handleClickEvent(event);
         break;
       }
       case "change": {
-        if (event.target == this.#browserProfileSelector) {
-          this.#onBrowserProfileSelectionChanged();
-        } else if (event.target == this.#selectAllCheckbox) {
-          let checkboxes = this.#shadowRoot.querySelectorAll(
-            'label[data-resource-type]:not([hidden]) > input[type="checkbox"]'
-          );
-          for (let checkbox of checkboxes) {
-            checkbox.checked = this.#selectAllCheckbox.checked;
-          }
-          this.#displaySelectedResources();
-        } else {
-          let checkboxes = this.#shadowRoot.querySelectorAll(
-            'label[data-resource-type]:not([hidden]) > input[type="checkbox"]'
-          );
-
-          let allVisibleChecked = Array.from(checkboxes).every(checkbox => {
-            return checkbox.checked;
-          });
-
-          this.#selectAllCheckbox.checked = allVisibleChecked;
-          this.#displaySelectedResources();
-        }
+        this.#handleChangeEvent(event);
         break;
       }
     }
diff --git a/browser/components/migration/tests/browser/browser_disabled_migrator.js b/browser/components/migration/tests/browser/browser_disabled_migrator.js
index 782666f6a6a7..a9a6b3083c59 100644
--- a/browser/components/migration/tests/browser/browser_disabled_migrator.js
+++ b/browser/components/migration/tests/browser/browser_disabled_migrator.js
@@ -17,7 +17,7 @@ add_task(async function test_enabled_migrator() {
     let wizard = dialog.querySelector("migration-wizard");
     let shadow = wizard.openOrClosedShadowRoot;
     let selector = shadow.querySelector("#browser-profile-selector");
-    selector.click();
+    EventUtils.synthesizeMouseAtCenter(selector, {}, prefsWin);
 
     await new Promise(resolve => {
       shadow
@@ -78,7 +78,7 @@ add_task(async function test_disabling_migrator() {
     let wizard = dialog.querySelector("migration-wizard");
     let shadow = wizard.openOrClosedShadowRoot;
     let selector = shadow.querySelector("#browser-profile-selector");
-    selector.click();
+    EventUtils.synthesizeMouseAtCenter(selector, {}, prefsWin);
 
     await new Promise(resolve => {
       shadow
diff --git a/browser/components/migration/tests/browser/browser_do_migration.js b/browser/components/migration/tests/browser/browser_do_migration.js
index fab9641960a7..74454c0ab1b2 100644
--- a/browser/components/migration/tests/browser/browser_do_migration.js
+++ b/browser/components/migration/tests/browser/browser_do_migration.js
@@ -106,7 +106,7 @@ add_task(async function test_successful_migrations() {
     );
 
     let dialogClosed = BrowserTestUtils.waitForEvent(dialog, "close");
-    doneButton.click();
+    EventUtils.synthesizeMouseAtCenter(doneButton, {}, prefsWin);
     await dialogClosed;
     assertQuantitiesShown(wizard, [
       MigrationWizardConstants.DISPLAYED_RESOURCE_TYPES.PASSWORDS,
diff --git a/browser/components/migration/tests/browser/browser_file_migration.js b/browser/components/migration/tests/browser/browser_file_migration.js
index c73dfc445608..94f4ff2908f8 100644
--- a/browser/components/migration/tests/browser/browser_file_migration.js
+++ b/browser/components/migration/tests/browser/browser_file_migration.js
@@ -132,7 +132,7 @@ add_task(async function test_file_migration() {
 
     // Now select our DummyFileMigrator from the list.
     let selector = shadow.querySelector("#browser-profile-selector");
-    selector.click();
+    EventUtils.synthesizeMouseAtCenter(selector, {}, prefsWin);
 
     info("Waiting for panel-list shown");
     await new Promise(resolve => {
@@ -246,7 +246,7 @@ add_task(async function test_file_migration_error() {
 
     // Now select our DummyFileMigrator from the list.
     let selector = shadow.querySelector("#browser-profile-selector");
-    selector.click();
+    EventUtils.synthesizeMouseAtCenter(selector, {}, prefsWin);
 
     info("Waiting for panel-list shown");
     await new Promise(resolve => {
diff --git a/browser/components/migration/tests/browser/head.js b/browser/components/migration/tests/browser/head.js
index d3d188a7e1f6..8824a50ee98f 100644
--- a/browser/components/migration/tests/browser/head.js
+++ b/browser/components/migration/tests/browser/head.js
@@ -332,7 +332,7 @@ async function selectResourceTypesAndStartMigration(
 
   // First, select the InternalTestingProfileMigrator browser.
   let selector = shadow.querySelector("#browser-profile-selector");
-  selector.click();
+  EventUtils.synthesizeMouseAtCenter(selector, {}, wizard.ownerGlobal);
 
   await new Promise(resolve => {
     shadow
diff --git a/browser/components/migration/tests/chrome/test_migration_wizard.html b/browser/components/migration/tests/chrome/test_migration_wizard.html
index cc2d8a036347..43fd3ab9312e 100644
--- a/browser/components/migration/tests/chrome/test_migration_wizard.html
+++ b/browser/components/migration/tests/chrome/test_migration_wizard.html
@@ -147,7 +147,7 @@
         // Test that the resource type checkboxes are shown or hidden depending on
         // which resourceTypes are included with the MigratorProfileInstance.
         for (let migratorInstance of MIGRATOR_PROFILE_INSTANCES) {
-          selector.click();
+          synthesizeMouseAtCenter(selector, {}, gWiz.ownerGlobal);
           await new Promise(resolve => {
             gShadowRoot
               .querySelector("panel-list")
@@ -248,7 +248,7 @@
         ok(isHidden(preamble), "preamble should be hidden.");
 
         let selector = gShadowRoot.querySelector("#browser-profile-selector");
-        selector.click();
+        synthesizeMouseAtCenter(selector, {}, gWiz.ownerGlobal);
         await new Promise(resolve => {
           let panelList = gShadowRoot.querySelector("panel-list");
           if (panelList) {
diff --git a/toolkit/content/widgets/panel-list/panel-list.js b/toolkit/content/widgets/panel-list/panel-list.js
index 2e93b4ddc3e4..a2b6cb1a009e 100644
--- a/toolkit/content/widgets/panel-list/panel-list.js
+++ b/toolkit/content/widgets/panel-list/panel-list.js
@@ -439,10 +439,6 @@
             // using the mouse. Ignore the first focusin event if it's on the
             // triggering target.
             this.focusHasChanged = true;
-          } else if (!target || !inPanelList) {
-            // If the target isn't in the panel, hide. This will close when focus
-            // moves out of the panel.
-            this.hide();
           } else {
             // Just record that there was a focusin event.
             this.focusHasChanged = true;