Thank you, buddy! This really helped!
Just want to share what worked for me: unchecking “Supports Activation Focus” in the widget’s class defaults Details pane. This allows me to control the Game Mode like normal on a per-widget basis, while still leaving “Enable Default Input Config” checked in the Common Input Settings, so it can still handle everything else.
Thank you so so much !
Ya this was the fix for me as well. I just spend 4 HOURS trying to figure out when my enhanced inputs would not work after closing a menu. That was why
Thanks from 2026. Using UE5, this solved my issue where no input actions were getting to widgets.
This seemed to do the trick! 
But I’m curious: Why is it that I ever hear so often those player controller input mode functions shouldn’t be used in conjunction with CommonUI?