This is the range of latest commit I pulled from github:
16fffaa…c0cff5a
Reproduction is very simply. Create new UMG widget asset, try to open it… Crash.
Edit:
else
{
ensureMsgf(false, TEXT("Unknown UI selection state in FBlueprintEditor::RefreshEditors"));
}
This is line at which it crashes in BlueprintEditor.cpp.
Edit:
Not sure if this is important.
But build game in debug mode, and run from visual studio in debug mode.