-When opening a second sequence after altering the one prior(locking and unlocking the camera) while simulating in the editor, leads to a crash
-Did not occur in 4.19 Preview 1
-As for the link to the UDN: this is issue SequencerCrashA
-Crash would not display callstack even though Debug symbols are installed but one is available in the UDN post
Expected: Changing between sequences after locking a camera while simulating does not cause a crash
Results: Changing between sequences when simulating in editor after locking a camera causes crash
There's no existing public thread on this issue, so head over to Questions & Answers just mention UE-54620 in the post.