:mhoye had steps to repro that are moderately reliable - **enable fission**, open customize mode, switch themes, and then quickly switch tabs / mouse around. This crashes earlier builds for me, so I'm clearing needinfo for the l10n folks. Earliest I've seen crash so far was https://hg.mozilla.org/integration/autoland/rev/40bc2dbc5201def6aebc34113cd9c422c82f85ff , which given https://bugzilla.mozilla.org/show_bug.cgi?id=1668875#c26 and the STR seems moderately plausible as a regressor?
Bug 1672560 Comment 4 Edit History
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:mhoye had steps to repro that are moderately reliable - **enable fission**, open customize mode, switch themes, and then quickly switch tabs / mouse around. This crashes earlier builds for me, so I'm clearing needinfo for the l10n folks. Earliest I've seen crash so far was https://hg.mozilla.org/integration/autoland/rev/40bc2dbc5201def6aebc34113cd9c422c82f85ff , which given https://bugzilla.mozilla.org/show_bug.cgi?id=1668875#c26 and the STR seems moderately plausible as a regressor? Edit: slack thread for reference: https://mozilla.slack.com/archives/C4D3JFF26/p1603389242479700