I can't reproduce this bug in release, so this seems to be a regression. I'm working on tracking down a regression range now.
Bug 1559715 Comment 8 Edit History
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I can't reproduce this bug in release, so this seems to be a regression. I'm working on tracking down a regression range now. [EDIT: actually I can reproduce in release 67, but it's just much flakier/harder-to-trigger than in Nightly]
I can't reproduce this bug in release, so this seems to be a regression. I'm working on tracking down a regression range now. [EDIT: actually I can reproduce in release 67, but it's just much flakier/harder-to-trigger than in Nightly; more in next comment]