[Extigy]

Here's a screen recording of the race condition PNG, for those without Safari.

https://youtu.be/KwbcVLvGfws

I found that doing a small amount of activity like resizing other non-Safari windows caused extra glitchiness, so I was doing that throughout.

[ASalazarMX]

It's wonderful that so many smart people are uncovering bugs in widely used software, but it gives me a sense of dread for all the countless bugs of varying severity still undiscovered. Our digital society is like a Jenga tower. I think I need another coffee.