There is a UI bug when using Focus Mode in Edge insider Canary Version 78.0.257.0 (Official build) canary (64-bit)
you can see it in the pictures:
unfortunately smiley button is not available in Focus Mode and we can't attach custom screenshots to the feedbacks...
how to produce? enable Focus Mode flag, go to Focus Mode and type in a long sentence to search
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Thank you for alerting us to this issue, @HotCakeX. I have filed a bug on this in our internal bug database. Thanks - Elliot