diff --git a/packages/docusaurus-theme-classic/src/theme/NavbarItem/DropdownNavbarItem/Desktop/index.tsx b/packages/docusaurus-theme-classic/src/theme/NavbarItem/DropdownNavbarItem/Desktop/index.tsx
index 0ecc3b9fc6a1..4ecf04338998 100644
--- a/packages/docusaurus-theme-classic/src/theme/NavbarItem/DropdownNavbarItem/Desktop/index.tsx
+++ b/packages/docusaurus-theme-classic/src/theme/NavbarItem/DropdownNavbarItem/Desktop/index.tsx
@@ -64,7 +64,7 @@ export default function DropdownNavbarItemDesktop({
         {...props}
         onClick={props.to ? undefined : (e) => e.preventDefault()}
         onKeyDown={(e) => {
-          if (e.key === 'Enter') {
+          if (e.key === 'Enter' || e.key === ' ') {
             e.preventDefault();
             setShowDropdown(!showDropdown);
           }
diff --git a/packages/docusaurus-theme-search-algolia/src/theme/SearchBar/index.tsx b/packages/docusaurus-theme-search-algolia/src/theme/SearchBar/index.tsx
index 103153260bc8..cf681939b143 100644
--- a/packages/docusaurus-theme-search-algolia/src/theme/SearchBar/index.tsx
+++ b/packages/docusaurus-theme-search-algolia/src/theme/SearchBar/index.tsx
@@ -312,9 +312,15 @@ function DocSearch({externalUrlRegex, ...props}: DocSearchV4Props) {
   );
 }
 
-export default function SearchBar(): ReactNode {
+export default function SearchBar(props: Partial<DocSearchV4Props>): ReactNode {
   const {siteConfig} = useDocusaurusContext();
-  return (
-    <DocSearch {...(siteConfig.themeConfig.algolia as DocSearchV4Props)} />
-  );
+
+  const docSearchProps: DocSearchV4Props = {
+    ...(siteConfig.themeConfig.algolia as DocSearchV4Props),
+    // Let props override theme config
+    // See https://github.com/facebook/docusaurus/pull/11581
+    ...props,
+  };
+
+  return <DocSearch {...docSearchProps} />;
 }
diff --git a/packages/docusaurus/src/commands/utils/openBrowser/openBrowser.ts b/packages/docusaurus/src/commands/utils/openBrowser/openBrowser.ts
index 2c4d2789a62d..0660005a739c 100644
--- a/packages/docusaurus/src/commands/utils/openBrowser/openBrowser.ts
+++ b/packages/docusaurus/src/commands/utils/openBrowser/openBrowser.ts
@@ -95,6 +95,9 @@ async function tryOpenWithAppleScript({
       );
     }
 
+    // Test this manually with:
+    // osascript ./packages/docusaurus/src/commands/utils/openBrowser/openChrome.applescript "http://localhost:8080" "Google Chrome"
+    // osascript ./packages/docusaurus/src/commands/utils/openBrowser/openChrome.applescript "http://localhost:8080" "Arc"
     async function tryBrowser(browserName: string): Promise<boolean> {
       try {
         // This command runs the openChrome.applescript (copied from CRA)
diff --git a/packages/docusaurus/src/commands/utils/openBrowser/openChrome.applescript b/packages/docusaurus/src/commands/utils/openBrowser/openChrome.applescript
index c1efba159853..6d8e9a85ef54 100644
--- a/packages/docusaurus/src/commands/utils/openBrowser/openChrome.applescript
+++ b/packages/docusaurus/src/commands/utils/openBrowser/openChrome.applescript
@@ -19,6 +19,16 @@ on run argv
     set theProgram to item 2 of argv
   end if
 
+  -- Arc: simple open + activate, no tab reuse
+  -- See https://github.com/facebook/docusaurus/issues/11582
+  if theProgram is "Arc" then
+    tell application "Arc"
+      activate
+      open location theURL
+    end tell
+    return
+  end if
+
   using terms from application "Google Chrome"
     tell application theProgram
 
diff --git a/packages/docusaurus/src/webpack/aliases/__tests__/__fixtures__/theme-2/NavbarItem/SiblingNavbarItem.d.ts b/packages/docusaurus/src/webpack/aliases/__tests__/__fixtures__/theme-2/NavbarItem/SiblingNavbarItem.d.ts
new file mode 100644
index 000000000000..e69de29bb2d1
diff --git a/packages/docusaurus/src/webpack/aliases/__tests__/__fixtures__/theme-2/NavbarItem/SiblingNavbarItem.test.js b/packages/docusaurus/src/webpack/aliases/__tests__/__fixtures__/theme-2/NavbarItem/SiblingNavbarItem.test.js
new file mode 100644
index 000000000000..e69de29bb2d1
diff --git a/packages/docusaurus/src/webpack/aliases/__tests__/__fixtures__/theme-2/NavbarItem/SiblingNavbarItem.test.jsx b/packages/docusaurus/src/webpack/aliases/__tests__/__fixtures__/theme-2/NavbarItem/SiblingNavbarItem.test.jsx
new file mode 100644
index 000000000000..e69de29bb2d1
diff --git a/packages/docusaurus/src/webpack/aliases/__tests__/__fixtures__/theme-2/NavbarItem/SiblingNavbarItem.test.ts b/packages/docusaurus/src/webpack/aliases/__tests__/__fixtures__/theme-2/NavbarItem/SiblingNavbarItem.test.ts
new file mode 100644
index 000000000000..e69de29bb2d1
diff --git a/packages/docusaurus/src/webpack/aliases/__tests__/__fixtures__/theme-2/NavbarItem/SiblingNavbarItem.test.tsx b/packages/docusaurus/src/webpack/aliases/__tests__/__fixtures__/theme-2/NavbarItem/SiblingNavbarItem.test.tsx
new file mode 100644
index 000000000000..e69de29bb2d1
diff --git a/packages/docusaurus/src/webpack/aliases/__tests__/__fixtures__/theme-2/NavbarItem/__tests__/index.js b/packages/docusaurus/src/webpack/aliases/__tests__/__fixtures__/theme-2/NavbarItem/__tests__/index.js
new file mode 100644
index 000000000000..e69de29bb2d1
diff --git a/packages/docusaurus/src/webpack/aliases/index.ts b/packages/docusaurus/src/webpack/aliases/index.ts
index dbade3a77e36..03e14426b04d 100644
--- a/packages/docusaurus/src/webpack/aliases/index.ts
+++ b/packages/docusaurus/src/webpack/aliases/index.ts
@@ -53,6 +53,13 @@ export async function createAliasesForTheme(
 
   const themeComponentFiles = await Globby(['**/*.{js,jsx,ts,tsx}'], {
     cwd: themePath,
+    ignore: [
+      // Ignore co-located test files
+      '**/__tests__/**',
+      '**/*.test.{js,jsx,ts,tsx}',
+      // Ignore type declaration files
+      '**/*.d.ts',
+    ],
   });
 
   const aliases: ThemeAliases = {};
diff --git a/packages/eslint-plugin/src/rules/no-untranslated-text.ts b/packages/eslint-plugin/src/rules/no-untranslated-text.ts
index cdf416069a94..a43042519397 100644
--- a/packages/eslint-plugin/src/rules/no-untranslated-text.ts
+++ b/packages/eslint-plugin/src/rules/no-untranslated-text.ts
@@ -30,6 +30,9 @@ export default createRule<Options, MessageIds>({
         properties: {
           ignoredStrings: {
             type: 'array',
+            items: {
+              type: 'string',
+            },
           },
         },
         additionalProperties: false,