This bug was filed from the Socorro interface and is report bp-46aff620-fec3-401e-b1b5-6880f0170716. =============================================================
This is pretty much just another place where an use-after-free absolute frame can lead to crash.
This specific crash I got when clicking Publish in mozreview.
Er, I don't understand why that closes the bug...
Must have misclicked. Anyway, currently looking into this.
FWIW, the crashes happen only OS X?
I did encounter it on OS X, and am currently trying to reproduce on Linux in rr.