Created attachment 469593 [details] test case [TextureMapper] backdrop filter should be applied to the border area of the element
This is reproducible with Mac port. Seems like a bug of the common code.
Pull request: https://github.com/WebKit/WebKit/pull/23461
Created attachment 469612 [details] another test case
<rdar://problem/122295068>
Committed 274757@main (8411b7acd415): <https://commits.webkit.org/274757@main> Reviewed commits have been landed. Closing PR #23461 and removing active labels.