As noted in bug 1933229 comment 8: this is a regression from when we enabled container queries (because the bug is specific to `container-type: inline-style`). That happened in this Nightly range: Last good: 2022-11-20 First bad: 2022-11-21 https://hg.mozilla.org/mozilla-central/pushloghtml?fromchange=d2c6287383301f29964047d5c718640eb4bbcccb&tochange=a29b80b107103df84e493008e420e30aea857da1 In builds from shortly after that time period, you can avoid the bug by toggling `layout.css.container-queries.enabled` to `false` (just as the reference cases here avoid the bug by removing the `container-type` styling).
Bug 1935189 Comment 7 Edit History
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As noted in bug 1933229 comment 8: this is a regression from when we enabled container queries (because the bug is specific to `container-type: inline-size`). That happened in this Nightly range: Last good: 2022-11-20 First bad: 2022-11-21 https://hg.mozilla.org/mozilla-central/pushloghtml?fromchange=d2c6287383301f29964047d5c718640eb4bbcccb&tochange=a29b80b107103df84e493008e420e30aea857da1 In builds from shortly after that time period, you can avoid the bug by toggling `layout.css.container-queries.enabled` to `false` (just as the reference cases here avoid the bug by removing the `container-type` styling).