"Contain: strict" not actually affecting Paint? #3
Description
Hey there!
I'm wondering if there's been a recent regression in Chromium, or perhaps I'm misunderstanding something regarding paint.
When I F12 Performance recording the unoptimized and optimized examples, and hover over the "Paint" section for the profile, I would expect that in the unoptimized version the entire page is affected by the paint, but not the optimized version as the optimized version would know that anything that happens inside the contain:strict won't affect anything else.
But in the optimized version for a performance profile, I see this:
This is after clicking on "Animate me" in the optimized example.
Am I misunderstanding something with contain: strict? I've tested this with Edge and Chrome.