Hey, whenever I click an option in context menus it is not being executed, sometimes alt-tabbing fixes it but it breaks pretty quickly again. I have this in the selection mode aswell as quick add object and many other context menus
I attached a video of my issue
Editor version: 5.7
Third person template, restarted editor, new project and restarted pc, aswell as turned off discord overlay, nothing helped
I have de same problem. Also, most of the time the windows closes and doesn’t open, it just blinks
I have de same problem. 
In my particular case, I was using Unreal Engine UEFN 5.7 v38.10.
I discovered that the problem was caused by having Discord open (either in a secondary window or minimized). In either case, once I closed it, the problem disappeared immediately. I suggest closing background applications; it seems to be a focus conflict in version 5.7. Let me know how it goes for you.
You legit just saved me, Discord being open made my menus stop working, I’ve been fighting this for 2 weeks
Wow, I’m so glad to read this!