Super happy to see this shapping up. Re. questions you had about `-moz-appearance: none` making the checkbox invisible: this is probably because of the deleted line in `devtools/client/jar.mn`: if we don't restore it, Firefox doesn't find the checkbox image.
Bug 1491811 Comment 38 Edit History
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Super happy to see this shaping up. Re. questions you had about `-moz-appearance: none` making the checkbox invisible: this is probably because of the deleted line in `devtools/client/jar.mn`: if we don't restore it, Firefox doesn't find the checkbox image.