My take is that we should allow all of them to bubble, as failing to bubble caused several webcompat issues. But then I think bubbling for all also can cause another webcompat issue, hmm.
Bug 1653882 Comment 16 Edit History
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My take is that we should allow all of them to bubble, as failing to bubble caused several webcompat issues. But then I think bubbling for all also can cause another webcompat issue, hmm. Edit: Maybe we can try bubble-for-all behind a flag and see any issue happens?