4.5 UMG Incorrect widget hierarchy crash

Bug: Editor(run from code, without debugging , dev editor, win64, custom game project) crashes when I drag ScaleBox into Border(to set it as a child) which already has a child(a text label in my case). When i try to drag button into the same Border, button dissapears. There seems to be missing checks on Widget`s child restrictions.

Screenshot:

Crash log from editor:

Hello ,

I was unable to reproduce this issue. I have a couple of questions that will help us narrow down the problem that you are experiencing.

Quick questions:

  1. Could you try and reproduce this on a clean project?
  2. If successful could you then provide the exact reproduction steps that you used to recreate the issue?

Hey ,

I’ve not heard back from you in a few days, so we are marking this post as Resolved for tracking purposes. If you are still experiencing the issue you reported, please respond to this message with additional information and I will try to assist you further.

Thank you.