Oh, and now that I've actually tried [the testcase](https://codepen.io/fchristant/pen/VOrYYz) from [the bug comment you linked to](https://bugs.chromium.org/p/chromium/issues/detail?id=497522#c196), I'm no longer sure if specifying `edgeMode="duplicate"` for the `blur()` filter function was such a good idea. In the testcase, if you slowly scroll the contents, in Chrome Canary the blur produces a flickering effect near the top and bottom edges of the header. That's because the pixels along the edge now have a much stronger influence on the blur results than before. There is a lot less flickering in Safari. -- GitHub Notification of comment by mstange Please view or discuss this issue at https://github.com/w3c/fxtf-drafts/pull/342#issuecomment-504529654 using your GitHub accountReceived on Friday, 21 June 2019 18:38:20 UTC
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