UE 4.8.3 UMG bug: renaming to same name of old replaced widget causes crash

I’ve recreated this in a blank project:

  1. Create a new widget.
  2. Create Horizontal Box and nest two other engine widgets inside.
  3. set Horizontal Box to become variable and give it a name X.
  4. Compile and Save.
  5. Now find X in hierarchy or on designer panel, right click, and replace with Vertical Box from the drop down menu.
  6. Set that new Vertical Box to become variable and give it the same name X.
  7. Unreal will freeze and crash by self, will trigger breakpoint and crash in Visual Studio.

This works with Vertical to Horizontal Box as well. Haven’t tried other combinations.

Hello Bennick,

After doing some digging I found that this is a known issue (UE-16568) and that is was resolved in 4.9. I hope that this information helps. Thank you for your time and information.

Make it a great day