I had same problem on UE4.10.2. I read that it’s ok if packaged with “shipping” on another thread but not.
Then I found the cause. That is SlateRemote plugin.
(if you googled and came here and care about this matter, it’s better to check
Edit>ProjectSetting>End-UserSettings. I don’t know when it will send anonymous data,
but soon or later it causes end-users to have suspicious I think.)
