We currently allocate (and paint) a backing store for opacity:0 layers, so that we can initiate animations faster. Unfortunately this uses a lot of memory, so we're going to try skipping this, and allocating/painting on demand when an animation is started.
<rdar://93608011>
Pull request: https://github.com/WebKit/WebKit/pull/1743
Committed 251965@main (6d4c5f059b87): <https://commits.webkit.org/251965@main> Reviewed commits have been landed. Closing PR #1743 and removing active labels.