Please try to delete the report and re-publish it once.
Is the above doesn't resolve your issue, please raise a ticket with MS Support since this seems like a bug. Please identify the below before raising ticket:
1. Is it happening for a single report only?
2. Is it happening for a single workspace only?
3. Is it happening for a single user or all users?
Give a Thumbs Up if this post helped you in any way and Mark This Post as Solution if it solved your query !!!
Proud To Be a Super User !!!