A good way to reproduce seems to be the following command, pointing to a binary from a shippable build of mozilla-central:
> ./mach marionette-test -vv --gecko-log=- testing/marionette/harness/marionette_harness/tests/unit/test_quit_restart.py --run-until-failure
It might run for a while but eventually should fail.
Bug 1784591 Comment 23 Edit History
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A good way to reproduce seems to be the following command, pointing to a binary from a shippable build of mozilla-central:
> ./mach marionette-test --binary=path/to/firefox -vv --gecko-log=- testing/marionette/harness/marionette_harness/tests/unit/test_quit_restart.py --run-until-failure
It might run for a while but eventually should fail.