(In reply to Bugmon [:jkratzer for issues] from comment #2) > The bug appears to have been introduced in the following build range From the perspective of "do we assert", this is a regression from bug 1956780 in that range (which where we added the assertion that's failing here). But as emilio notes in comment 1, the assertion is really just highlighting a problem that goes back much further.
Bug 1957178 Comment 3 Edit History
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(In reply to Bugmon [:jkratzer for issues] from comment #2) > The bug appears to have been introduced in the following build range From the perspective of "do we assert", this is a regression from bug 1956780 in that range (which where we added the assertion that's failing here). But as emilio notes in comment 1, this new assertion is really just highlighting a problem that goes back much further.