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The contain:paint clipping would be redundant and hence unnecessary in this scenario, because: - Scroll frames already clip their descendant frames. - contain:paint has other (non-clipping-related) effects that prevent descendant frames from escaping the scrollframe ancestor. So, no further clipping is required. This is a behavior change - it works around an issue that makes us fail to repaint mousewheel-scrolled content inside of any scrollframe that returns true from ShouldApplyOverflowClipping(). Differential Revision: https://phabricator.services.mozilla.com/D12056 --HG-- extra : moz-landing-system : lando |
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base | ||
build | ||
doc | ||
forms | ||
generic | ||
inspector | ||
ipc | ||
mathml | ||
media | ||
painting | ||
printing | ||
reftests | ||
style | ||
svg | ||
tables | ||
tools | ||
xul | ||
moz.build |