Hey ,
Thanks for sending a thorough package of info for me. I was able to find a matching crash in our system, but it appears that it was supposed to be fixed in 4.7.
This leads me to believe the bug is still there, but simply under different repro steps.
Would you be willing to send me the 4.7 version of your project so that we can reproduce this in house? If you’d rather not send the whole project, you could try using the migrate functionality to bring the problematic map into a blank 4.7 project and send that.
If you choose to migrate the map, could you ensure that it still crashes on your end after upgrading to 4.9? Just to be sure
You can upload to Drive, Dropbox, etc and then PM Me the link on the forums.
PS - Leaving this for my own tracking purposes, but the bug in the system is UE-8096