236326 2022-02-08 13:49:05 -0800 Blurred element is not properly repainted on hover 2022-02-14 19:54:06 -0800 1 1 1 Unclassified WebKit Compositing Safari Technology Preview Mac (Apple Silicon) macOS 12 NEW InRadar P2 Normal --- 1 jed webkit-unassigned simon.fraser webkit-bug-importer zalan oldest_to_newest 1838865 0 451301 jed 2022-02-08 13:49:05 -0800 Created attachment 451301 Small reproduction The included test file contains an HTML element with the class "spoiler" and the following CSS: .spoiler:not(:hover) { filter: blur(10px); } The behavior I expected is that when hovering over the element, all traces of the blur will be removed and the unblurred text will become visible. The actual behavior I’m seeing is that while the portion of the page inside the element’s content rect is correctly updated, the portions of the blur that extend past the content rect remain visible. 1841546 1 webkit-bug-importer 2022-02-14 19:54:06 -0800 <rdar://problem/88943473> 451301 2022-02-08 13:49:05 -0800 2022-02-08 13:49:05 -0800 Small reproduction blur-bug.html text/html 462 jed PCFET0NUWVBFIGh0bWw+CjxodG1sIGxhbmc9ImVuIj4KICA8aGVhZD4KICAgIDxtZXRhIGNoYXJz ZXQ9IlVURi04IiAvPgogICAgPG1ldGEgaHR0cC1lcXVpdj0iWC1VQS1Db21wYXRpYmxlIiBjb250 ZW50PSJJRT1lZGdlIiAvPgogICAgPG1ldGEgbmFtZT0idmlld3BvcnQiIGNvbnRlbnQ9IndpZHRo PWRldmljZS13aWR0aCwgaW5pdGlhbC1zY2FsZT0xLjAiIC8+CiAgICA8dGl0bGU+Qmx1ciBwYWlu dGluZyBidWc8L3RpdGxlPgogICAgPHN0eWxlPgogICAgICAuc3BvaWxlcjpub3QoOmhvdmVyKSB7 CiAgICAgICAgZmlsdGVyOiBibHVyKDEwcHgpOwogICAgICB9CiAgICA8L3N0eWxlPgogIDwvaGVh ZD4KICA8Ym9keT4KICAgIDxkaXYgc3R5bGU9Im1hcmdpbjogMTAwcHgiPgogICAgICA8ZGl2IGNs YXNzPSJzcG9pbGVyIj5IZWxsbywgd29ybGQhPC9kaXY+CiAgICA8L2Rpdj4KICA8L2JvZHk+Cjwv aHRtbD4K