Created attachment 623550 [details] [diff] [review] Fix GetClippedGeometry After rectangular clips were introduced GetClippedGeometry was never updated to deal with them. Since Canvas doesn't use rectangular clips that's no problem for production. But it is with the Azure-Thebes wrapper.
Please can you set the target milestone when landing on inbound. Thank you :-) https://hg.mozilla.org/mozilla-central/rev/00927678a3c4