Folders within shared folders

Hey there,
I shared a folder, that is within one of my private libraries, with a user. That folder showed up like a libarary on their computer. They then synced the library/folder to their computer, added some files to it, which all synced correctly, but then added a folder of files which didn’t sync.

Am I right in thinking that user’s cannot add subfolders to a folder that was shared with them, and that this is only possible on shared libararies?

For context, the seafile server is running 5.1.4

This is not right. I suggest you check seafile.log at the client side to check if there are any related errors.

Thanks for clarifying that for me. I’ll put it down to user error or an outdated seafile client etc. I just wanted to check this wasn’t the expected behaviour.