Reproduced the issue in release 91.0 (build id: 20210804193234) using Windows 10. Verified - Fixed in latest Nightly 93.0a1 (build id: 20210811213739), Nightly 92.0a1 and 91.1.0esr (build id: 20210812202727). The spacing is correct in the bookmarks menu button after adding it to the toolbar.
Bug 1710629 Comment 8 Edit History
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Reproduced the issue in release 91.0 (build id: 20210804193234) using Windows 10. Verified - Fixed in latest Nightly 93.0a1 (build id: 20210811213739), Nightly 92.0a1 and 91.1.0esr (build id: 20210812202727). The spacing between the icon and the title of the bookmarks is correct in the bookmarks menu button after adding it to the toolbar.
Reproduced the issue in release 91.0 (build id: 20210804193234) using Windows 10. Verified - Fixed in latest Nightly 93.0a1 (build id: 20210811213739), Beta 92.0b3 and 91.1.0esr (build id: 20210812202727). The spacing between the icon and the title of the bookmarks is correct in the bookmarks menu button after adding it to the toolbar.