Created attachment 442805 [details] Crash report from macOS Calling getDisplayMedia() crashes Safari TP 134 Go to https://demo.lukewarlow.uk/get-display-media/ click the button, either the one in the iframe or parent page both are the same, observe Safari TP crashes. This could have been the case in earlier Safari TP versions but I can only verify with the latest.
<rdar://problem/84804037>
I am not able to reproduce in STP 134 myself but I am not on 12.0.1.
Apologies, I forgot to mention you need to click allow when prompted for permission.
I can reproduce.
This doesn't reproduce in a TOT build. I believe it was fixed by the refactoring done in bug 232480.
Tested Safari TP 135 and this is indeed fixed.