Is this normal behavior or not?
It seems weird that i cannot access my data thats stored online with duplicacy while a full snapshot has not been made yet.
Right, you’ll have to wait until the initial backup is completed.
Okay. and afterwards partly uploaded changes are there? Or does a full backup(changed & added files) always need to be made in order to list the files from that revision?
All subsequent backups are incremental. Any revision will become visible as soon as the backup is done.
Ok, so the secondary backup also has to fully finish for restores to work.