Hi Blake,
UE-162836 is a catch-all for all the work we’re doing to make async loading in editor possible. So that change shouldn’t be required on your side.
Loading is stuck reports uses a simple timeout… is it possible the timeout is not enough in some case?
When there is a crash in DumpState, it is generally when parts of the loader are still active, which can cause race conditions with the DumpState code that assumes the loader is really stuck and is not modifying structures anymore.
You could try bumping the s.StallDetectorTimeout and see if the issues goes away?
Hope this helps,
Danny