Seadrive filename length

We are having an issue with the latest version of Seadrive only allowing 80 characters with the filename length when saving documents directly to Seadrive folder.
If one saves the document to a local PC folder there no issue, then if one copies the saved document to Seadrive folder the is no issue, although if one tries to rename the document filename in Seadrive it is not allowed.

Any assistance would be very much appreciated.

Can you provide screenshots and also the seadrive.log messages when the error happened?