Ugh. I just reviewed all the changes in build 4152 and there weren’t that many. My main suspicion is the changes related to this - which should be a simple fix, but I can’t reproduce it and it’s being difficult.
Easiest way to confirm that would be to back that change out and get you to test it, but I’d prefer to understand what’s going on with it so if you’ve got time to crash a crash dump that’d be great.
To capture a crash report you can use Microsoft’s Debug Diagnostics Tool.