159045 2016-06-22 16:40:13 -0700 Video inside iframe is not clipped by border-radius on iframe 2023-01-30 13:11:19 -0800 1 1 1 Unclassified WebKit Layout and Rendering WebKit Nightly Build Unspecified Unspecified NEW https://bugs.webkit.org/show_bug.cgi?id=251379 P2 Normal --- 1 thorton webkit-unassigned simon.fraser oldest_to_newest 1204718 0 281883 thorton 2016-06-22 16:40:13 -0700 Created attachment 281883 repro See attached test case; border-radius on a theoretically-stacking-context iframe doesn't clip the video inside it. If you put all of the clipping and stacking context related properties on a parent of the iframe instead, everything works fine. 281883 2016-06-22 16:40:13 -0700 2016-06-22 16:40:13 -0700 repro test-video.html text/html 284 thorton PHN0eWxlPgppZnJhbWUgewogICAgYm9yZGVyLXJhZGl1czogNTBweDsKICAgIG92ZXJmbG93OiBo aWRkZW47CiAgICBib3JkZXI6IDVweCBzb2xpZCByZWQ7CiAgICBkaXNwbGF5OiBpbmxpbmUtYmxv Y2s7CiAgICB6LWluZGV4OiAwOwogICAgcG9zaXRpb246IHJlbGF0aXZlOwp9Cjwvc3R5bGU+Cjxk aXY+CjxpZnJhbWUgc3JjZG9jPSI8c3R5bGU+Ym9keSB7IG1hcmdpbjogMDsgfT48L3N0eWxlPjx2 aWRlbyBzcmM9J3RoaW5nLm1wNCcgYXV0b3BsYXk+PC92aWRlbz4iPjwvaWZyYW1lPgo8L2Rpdj4=