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- Open two different app windows
- Left-click to activate one window (e.g. Finder)
- Right-click on the other non-activated app window this opens the context menu (e.g. Safari)
- Close the context menu by clicking outside of it and don't select any context menu option
Someone else mentioned iPhone Mirroring being the culprit. I followed these steps and wasn't noticing any "hover" issues. Not 100% clear what that means, but here's what happened after I closed the context menu by clicking outside of it:

- "Finder" remains the active application per the menubar
- If I move my mouse over other elements inside Safari (i.e., my bookmarks bar), they do highlight. But if I mouse over like a URL or something, the status bar doesn't pop up like it would if Safari was the active app.

I have never owned an iPhone and so have never used iPhone Mirroring.
 
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