OWA Upload and Share Permissions

Hello...I have a user using OWA (University - Microsoft 365 A5 license) who is experiencing a new scenario/error msg., when initiating the "upload and share" option to share a locally stored file as an email attachment (gets uploaded by default to their OneDrive Attachments folder) when sending OWA email messages to colleagues.  

The email will send with the attachment icon/link, but recipients don't have access to it and have to choose the "request access" option, where then the user/sender can approve the request for access. 

The error msg., is "you don't have permission to give others access to file X" and the filename that is uploaded has red text (normally it is blue). 

The users has tested this scenario on multiple computers w/ multiple browsers, and changed the upload OneDrive folder location, with the same result.  I can initiate the same scenario on the same computers, browsers, and files, while signed onto my OWA account w/ out issue.

The user's Mailbox has a small quota size and their OneDrive account does as well.   

This started about two weeks ago, though as far as I know, no University Enterprise changes were made to the users account.  Not sure what to look at for a solution so any help would be appreciated.

Thanks!