export-pwaccesscontroltoexcel and 365 Sensitivity Label

Our organisation has recently started using the Office 365 Sensitivity labelling and mandate the application of a label prior to saving a document or sending an Outlook email. This appears to have blocked the Powershell function from being able to access the spreadsheet when outputting access control and by the time a label is picked from the dialogue that pops up it seems like the function has timed out. The process completes but the spreadsheet is empty apart from the default headers.

I've tried the switches to ignore and silently continue on errors but they don't seem to help. Has anyone else come across this?