We have the same problem with missing labels in xul:treecol in tor browser. Basically, setting "label" attribute on the `treecol` will not update the `xul:label` element's `value` as per the `inheritedAttributes`. I think the regression was from https://hg.mozilla.org/integration/autoland/rev/57b5df18c27c#l7.12. I.e. bug 1820634 which landed in 112.
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We have the same problem with missing labels in xul:treecol in tor browser. Basically, setting `label` attribute on the `treecol` will not update the `xul:label` element's `value` as per the `inheritedAttributes`. I think the regression was from https://hg.mozilla.org/integration/autoland/rev/57b5df18c27c#l7.12. I.e. bug 1820634 which landed in 112.