Not sure… I had a widget that crashed as soon as it hit a “play animation” node in the graph. The ONLY way to stop the engine from crashing was to create a brand new widget BP and copy/paste everything from inside the old widget, into the new one.
No change I made to the old widget, (deleting / re-adding nodes, refreshing, re-saveing etc), made any difference.
Do you have any good method for finding what widgets are broken? Its a bit of a hit n miss for me right now.