Unmodified files keep synchronizing again

When i edit a local file in “Documents”, it’s uploaded to the server, as it should be. Problem is a lot of other files, which haven’t been modified, are uploaded again. Always the same files (288mb total), not all the files inside the directory.

It says “File has been changed since it was discovered” but i know for sure it wasn’t changed at all.

This is happening in a recent installation in Manjaro Linux. noatime is set in /etc/fstab for the partition where “Documents” folder is.

This is a problem to me, because i have limited bandwidth on server-side, and i can’t waste it uploading the same files over and over!

Thanks for your help.