Every now and then I get a "Synchronization successful" box overlaid on top of whatever app I'm running at the moment, including fullscreen apps such as games or Netflix. (So to clarify, it's not a drop-down notification).
I do have a quite a lot of apps, and some of these do some kind of frequent "synchronization" (e.g. UberSync for Facebook, Sms Backup+, etc.). I've gone through their options several times and I couldn't find any obvious option.
So my questions are:
is anyone else getting this? is the culprit well known?
is there some way to figure out which app is issuing this overlay, short of selectively disabling them until it disappears?
I'm running Android 4.3 on a Nexus 4 phone but I've had this problem on 4.2 as well.