1) have two machines synced to the same personas (lightweight theme). 2) on client A. switch theme back to default, Sync Now 3) Sync Now client B. Test results: Initial window on client B is not updated to default theme. (subsequent windows or on restart displays default theme) (also note in addons that the default theme is the active theme) Expected result: Dynamic update of default theme in the current browser window
This is a dupe of bug 579843. However, that one was never fixed for legacy sync.