(In reply to Henri Sivonen (:hsivonen) from comment #8) > The non-debug build manifestation is likely just fallout from executing past this assertion. I don't think so, as this assertion occurs even in builds before the landing of the regressing bug. This assertion filing is probably still worth investigating (in a separate bug), but it doesn't look like it's the cause of this bug.
Bug 1565525 Comment 9 Edit History
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(In reply to Henri Sivonen (:hsivonen) from comment #8) > The non-debug build manifestation is likely just fallout from executing past this assertion. I don't think so, as this assertion occurs even in builds before the landing of the regressing bug. This assertion firing is probably still worth investigating (in a separate bug), but it doesn't look like it's the cause of this bug.