They have, it's suspected to be caused by a race condition with memory pressure events [0][1]. It looks like the patch is not included in Firefox 74 though. [0

They have, it's suspected to be caused by a race condition with memory pressure events [0][1]. It looks like the patch is not included in Firefox 74 though. [0] https://mozillagfx.wordpress.com/2020/03/02/moz-gfx-newsletter-51/ https://mozillagfx.wordpress.com/2020/03/02/moz-gfx-newslett... [1] https://bugzilla.mozilla.org/show_bug.cgi?id=1617083 https://bugzilla.mozilla.org/show_bug.cgi?id=1617083