commit b3d11ef727fc59be9d63a065705eabee17c82bb7 parent 3de0f7485272036cb4e87e392423da01897710b1 Author: Kiet Ho <kiet.ho@apple.com> Date: Tue, 14 Oct 2025 22:22:47 +0000 Bug 1992869 [wpt PR 55264] - `css/css-anchor-position`: add test about mutating a `@position-try` rule in a sheet not affecting identical rule in another sheet, a=testonly Automatic update from web-platform-tests css/css-anchor-position: add test about mutating a @position-try rule in a sheet not affecting identical rule in another sheet There's a bug in WebKit that manifests when two CSS stylesheets have identical content, a @position-try rule with the same name. If a rule in one stylesheet is modified using JavaScript, the change can be seen in the rule in the other stylesheet. This shouldn't happen, because the two stylesheets are supposed to be independent from each other. Add a test for this bug. This was previously tested by position-try-rule-caching.html, this commit adds another test that triggers the bug using a different route. Rename the previous test to position-try-rule-caching-001.html -- wpt-commits: daddee2834539c10b66b0a6665091a0401747d9e wpt-pr: 55264