Hi Stefan, We would need a bit more info about this issue to investigate. Right now I can't reproduce this by syncing a firefox addon that has themes, addons and passwords. Could you please share an about:support or mention if there are any specific addons synced? If you are 100% sure this happens only after using Firefox Sync it would be very useful to know what exactly do we sync to reproduce this. Thanks!
Bug 1682716 Comment 2 Edit History
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Hi Stefan, We would need a bit more info about this issue to investigate. Right now I can't reproduce this by syncing a firefox addon that has themes, addons and passwords. Could you please share an about:support or mention if there are any specific addons synced? If you are 100% sure this happens only after using Firefox Sync it would be very useful to know what exactly do we sync to reproduce this. Can you reproduce this by using sync on any other device you have? Thanks!