Not sure how to reproduce, but it has happened twice so I am attaching the stack traces.
Created attachment 30799 [details]
Created attachment 30800 [details]
And once more today. Am I the only person seeing this?
We had a bug making crashes with this backtrace common pre r43885, which certainly addressed the majority of cases of this problem. The crash on r44111 is interesting since it is the first instance I've seen of a crash here since that fix went in.
If you continue to see this crash repeat, then any steps to reproduce (any websites that might be candidates for triggering the crash, behavior – the last problem tended to manifest when you returned to your machine having left it unused for a while & under high memory load, etc) would be hugely appreciated.
Created attachment 31035 [details]
I believe I was on fark.com and had just pressed command-L. Not reproducible.
This has stopped happening to me. I got a new computer, a new Safari was released, and new WebKit versions were released. The world may never know the cause.