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The editor window doesn't want to let go of focus

I just started with Unreal Engine, and I started having a strange issue. Every once in a while (I haven't pinned down the exact steps to reproduce yet) the editor window will not release focus. If I am in the editor window, then click another window (i.e. Safari, Mail, etc.), that window will gain focus for a half second but then the Unreal Editor window will regain focus.

Even if I minimize the editor window it somehow pulls focus away from other windows. It does let me retain focus on Xcode. But even when Xcode is in focus, and then I click another window, the Unreal Editor will gain focus again instead. The only solution I found is to either to quit the application (and start it up again in hopes that the issue won't happen again) or open the Editor Preferences window. If I open preferences the issue will stop; at least for a while.

The issue occurred yesterday while I was messing around on version 4.18, and again today when I started up 4.19 Preview. I'm running macOS High Sierra 10.13.2 (if that might help).

Could it be something specific that I'm clicking on within the editor that makes it not want to release focus? Or is this a bug?

Product Version: UE 4.18
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asked Mar 09 '18 at 02:25 PM in Using UE4

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avatar image zeldaguy Feb 06 '19 at 01:50 PM

I'm having this exact same problem on Mac with the 4.21.1 release of the editor. I can't quite pin it down either. Maybe something to do with executing the undo command too many times, or opening various other windows like the Material editor. Anyone have any insight on this?

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