What's described in #c12 seems similar to what's described in [bug 1362858#c11](https://bugzilla.mozilla.org/show_bug.cgi?id=1362858#c11).
Bug 1687263 Comment 14 Edit History
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What's described in [c12](https://bugzilla.mozilla.org/show_bug.cgi?id=1687263#c12) seems similar to what's described in [bug 1362858#c11](https://bugzilla.mozilla.org/show_bug.cgi?id=1362858#c11).