Review 360 - comments being posted under a different reviewer's name

I shared a course for review with three reviewers. For some reason, the comments for one of the reviewers are being posted as being from one of the other reviewers.

For clarity:

• Reviewer A
• Reviewer B
• Reviewer C

All invited through the review tool. Reviewer A has not provided any comments. Reviewer B has provided comments, but they appear under Reviewer A's name. Reviewer C has provided comments, which correctly appear under their name. 

A fourth reviewer started to provide comments using a link (not directly invited through review). Their comments are appearing as if they were Reviewer A. 

Has anyone else experienced this?