After r268898 the ref-test compositing/clipping/border-radius-async-overflow-stacking.html fails on GTK.
The failure is different depending on the display server so perhaps it has something to do with AC mode.
* Failure for xvfb-x11/softgl -> https://build.webkit.org/results/GTK-Linux-64-bit-Release-Tests/r268900%20(16593)/compositing/clipping/border-radius-async-overflow-stacking-diffs.html
* Failure for wayland/intel-mesa -> https://build.webkit.org/results/GTK-Linux-64-bit-Release-Wayland-Tests/r268898%20(14631)/compositing/clipping/border-radius-async-overflow-non-stacking-diffs.html
Looks like I messed up the position of m_childClippingMaskLayer?
Created attachment 460436 [details]
Created attachment 460437 [details]
I'm going to fix this in bug#242097.
Fixed by 252014@main.
*** This bug has been marked as a duplicate of bug 242097 ***