4.13 UMG widget broken?

Hello I’m working with the widget blueprints but after a project restart the whole editor will keep crashing.
I have widget1 and widget2.
In the Class Settings from widget2 i change Parent Class to Widget1 under Class Options.
I do this because I then can call custom events.
But I also want my buttons from widget2 to appear in widget1 so I also drag the widget from User Created into the panel from Widget1.
Everything works fine when I do it and press play. After I close the project and open it again. I cannot open the widgets anymore because the editor crashes.
So when one of the widgets get called or clicked on in the editor, everything crashes.
Any one ideas for a solution not a work around?
Also tried it in 4.14 but same crashes.

Thanks

Hello StefanCG,

I was able to reproduce this issue on our end. I have written up a report and I have submitted it to the developers for further consideration. I have also provided a link to the public tracker. Please feel free to use the link provided for future updates.

Link: Unreal Engine Issues and Bug Tracker (UE-38054)

Make it a great day