So the simulator crash still happens on the public release, but I can confirm that it only happens on the simulator and it runs fine on the actual hardware. I stripped down my app into a < 100 lines of code reproducer that might be helpful:
https://www.dropbox.com/s/chqk3j6a792n40z/simulator_crash.zip?dl=0
The crash still happens right after the crank is moved.
Sorry, we didn't get the fix into 1.13.1. 
We're prioritizing bugs now and I'm putting that into the 1.13.2 pile since it's a crasher. Hopefully the QA gatekeeper will agree with me.
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No worries! I just though I'd follow up on that now that the public version is out.