On currently Nightly (128.01) with the `sidebar.revamp` pref flipped the string is not visible for the Bookmarks. This might have been caused by bug 1891775. Even though its not in the customization menu yet, we should preserve the entry point for all sidebar panels in the Sidebar menubar and it clicking on it should go to the correct panel (just clicking on that empty space opened the Customization panel). Let's add a test to guard against future regression.
Bug 1896623 Comment 0 Edit History
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On currently Nightly (128.01) with the `sidebar.revamp` pref flipped to true the string is not visible for the Bookmarks. This might have been caused by bug 1891775. Even though its not in the customization menu yet, we should preserve the entry point for all sidebar panels in the Sidebar menubar and it clicking on it should go to the correct panel (just clicking on that empty space opened the Customization panel). Let's add a test to guard against future regression.