Yeah, StoreWindowClipRegion was effectively dead code which was there only for plugins. I removed it in https://phabricator.services.mozilla.com/D128863. That means probably that the top of the stack we see here is somehow worked. Gankra, do you know what might be going on with those reports.
Bug 1736312 Comment 6 Edit History
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Yeah, StoreWindowClipRegion was effectively dead code which was there only for plugins. I removed it in https://phabricator.services.mozilla.com/D128863. That means probably that the top of the stack we see here is somehow busted. Gankra, do you know what might be going on with those reports.