I just realized this got triaged to S3. I don't think that changing the default button in all file dialogs (and breaking double clicks, and apparently also the overwrite warning?) should count as S3.
Bug 2047865 Comment 19 Edit History
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I just realized this got triaged to S3. I don't think that changing the default button in all file dialogs (and breaking double clicks, and apparently also the overwrite warning?) should count as S3 - it should be considered more serious than that.