Since the upgrade to version 8.0 on Mac the small icons in front of menu items are missing (see attached screenshot).
Version 8.0.1 didn't solve the issue.
Looks like a change in Qt 6.8 on macOS which calibre 8 uses. Will look for a workaround when I have a moment.
Fixed in branch master. The fix will be in the next release. calibre is usually released every alternate Friday.
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Version 8.0.1 didn't solve the issue.