As mentioned in bug 1584160, if you take a browserAction and move it to a different toolbar, it does not come back after a restart. We need to refresh the `currentSet`s at some point after the extensions load.
Bug 1598190 Comment 0 Edit History
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As mentioned in bug 1584160 comment 14, if you take a browserAction and move it to a different toolbar, it does not come back after a restart. We need to refresh the `currentSet`s at some point after the extensions load.