|Summary:||Scrollbars are not clipped to layer bounds in RenderLayerBacking|
|Product:||WebKit||Reporter:||Chris Lord <clord>|
|Component:||Layout and Rendering||Assignee:||Chris Lord <clord>|
|Severity:||Normal||CC:||bfulgham, cdumez, changseok, darin, esprehn+autocc, ews-watchlist, fred.wang, glenn, kondapallykalyan, pdr, sam, simon.fraser, thorton, webkit-bug-importer, zalan|
|Version:||WebKit Nightly Build|
|Bug Depends on:|
Description Chris Lord 2021-06-09 09:15:42 PDT
As in the summary - perhaps it's intentional that scrollbars can appear outside of the content they correspond to, but this is causing some tests to fail with async overflow scroll enabled; namely imported/w3c/web-platform-tests/css/css-flexbox/overflow-auto-001.html (and perhaps more that we'll find out via EWS/bots if this lands)
Comment 3 Chris Lord 2021-06-14 09:15:50 PDT
Comment on attachment 431325 [details] Patch The 1 failure on Mac is because the expectations don't expect the overflow container layer to clip its children (which is what this patch modifies) - assuming the approach is deemed correct, I'll modify the expectations.
Comment 6 Chris Lord 2021-06-15 06:13:42 PDT
Comment on attachment 431420 [details] Patch Added a test for this in compositing/scrolling/async-overflow-scrolling as the only test that was hitting this was in WPT.
Comment 7 EWS 2021-06-15 11:12:41 PDT
Committed r278883 (238825@main): <https://commits.webkit.org/238825@main> All reviewed patches have been landed. Closing bug and clearing flags on attachment 431420 [details].