Fix Safari devtools issues because of nested @supports at-rules without normal rule
#19069
+49
−33
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This is not strictly needed to make it work, but without it the Safari devtools show weird results. It is a Safari browser bug, but this is a small enough workaround that it is worth adding ourselves. If we ever handle flattening ourselves, then this could in theory also go away.
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Have we filed (or found) a webkit bug for this? |
thecrypticace
approved these changes
Oct 6, 2025
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I couldn't find one immediately, but will talk to you about this tomorrow 👍 Going to merge this in the meantime. |
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This PR fixes a weird Safari rendering bug in the devtools. This seems to be happening when using
@supports, especially nested@supportsat-rules.The issue is that our color-mix fallback generates declarations directly in
@supportsat-rules which causes the weird rendering bug in Safari.Adding this intermediate
&rule seems to fix the issue.This is a workaround for a browser bug, but the additional 3 characters shouldn't be the end of the world.
Test plan
& { }intermediate ruleFixes: #19065
[ci-all]