it seems parts of #1657404 were backed out from beta in https://hg.mozilla.org/releases/mozilla-beta/rev/0f0e8d040ea71e2ab86e80215fc0e9a7275d1e2a so related to this backout ? maybe this bug should be backed out too ?
Bug 1680955 Comment 6 Edit History
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it seems parts of bug #1657404 were backed out from beta in https://hg.mozilla.org/releases/mozilla-beta/rev/0f0e8d040ea71e2ab86e80215fc0e9a7275d1e2a so related to this backout ? maybe this bug should be backed out too ?