I narrowed this down in mozregression to this patch stack: https://hg.mozilla.org/integration/autoland/pushloghtml?fromchange=fa6e8711fc147c3fce406591af314b2c4eab19f1&tochange=e4d362eebc148baf8432d0b013b6233995a2f16e Then I bisected it locally to this commit: https://phabricator.services.mozilla.com/D190727
Bug 1889576 Comment 4 Edit History
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I narrowed this down in mozregression to this patch stack: https://hg.mozilla.org/integration/autoland/pushloghtml?fromchange=fa6e8711fc147c3fce406591af314b2c4eab19f1&tochange=e4d362eebc148baf8432d0b013b6233995a2f16e Then I bisected it locally to this commit: https://phabricator.services.mozilla.com/D190727 --- Greg, I'm sure you could have guessed that it was an issue in that section of the code, but the nice thing is that it has been broken since November 5, 2023 (Nightly). In that sense, I would guess that there's a mixture being this race condition being somewhat specific to particular site conditions (e.g. switching languages on Wikipedia continues to work fine), and that changing the active translation language isn't as common of a situation as translating once.
I narrowed this down in mozregression to this patch stack: https://hg.mozilla.org/integration/autoland/pushloghtml?fromchange=fa6e8711fc147c3fce406591af314b2c4eab19f1&tochange=e4d362eebc148baf8432d0b013b6233995a2f16e Then I bisected it locally to this commit: https://phabricator.services.mozilla.com/D190727 --- Greg, I'm sure you could have guessed that it was an issue in that section of the code, but the nice thing is that it has been broken since November 5, 2023 (Nightly). Given that we haven't had a bug report for this until now (and from Marco, at that), I would guess that there's a mixture this being this race condition that may be somewhat specific to particular site conditions (e.g. switching active languages on Wikipedia continues to work fine), and that changing the active translation language isn't as common of a situation as translating once.
I narrowed this down in mozregression to this patch stack: https://hg.mozilla.org/integration/autoland/pushloghtml?fromchange=fa6e8711fc147c3fce406591af314b2c4eab19f1&tochange=e4d362eebc148baf8432d0b013b6233995a2f16e Then I bisected it locally to this commit: https://phabricator.services.mozilla.com/D190727 --- Greg, I'm sure you could have guessed that it was an issue in that section of the code, but the nice thing is that it has been broken since November 5, 2023 (Nightly). Given that we haven't had a bug report for this until now (and from Marco, at that), I would guess that there's a mixture this being this race condition that may be somewhat specific to particular site conditions (e.g. switching active languages on Wikipedia continues to work fine), and that changing the active translation language isn't as common of a situation as translating once.