Yes, all apps are up to date.
I tried resetting phone to factory, but same things happening after that, again.
Seems like it will not occur if I upload / download one by one photo (waiting file to be fully uploaded / downloaded), but yet I am not so sure, because I usually upload or download multiple files, as I hold all my memories on GDrive.
At first I thought it is GDrive problem with syncing, and than it happened with Facebook, with download from GDrive and Faceebok.