Bugmon Analysis:
Verified bug as reproducible on mozilla-central 20200804091327-7cb90fa4f485.
Failed to bisect testcase (Unable to launch the start build!):
> Start: e8b7c48d4e7ed1b63aeedff379b51e566ea499d9 (20191107015224)
> End: f6a3b097f8af440a142b02450a2cdaa978fdde9f (20200803033015)
> BuildFlags: BuildFlags(asan=True, tsan=False, debug=False, fuzzing=True, coverage=False, valgrind=False)
Bug 1656957 Comment 7 Edit History
Note: The actual edited comment in the bug view page will always show the original commenter’s name and original timestamp.
--
Apologies for the delay. Looks like bugmon was using outdated prefs. The attached testcase requires the `dom.fetchObserver.enabled` pref enabled.