Hi,
This issue seems new. The plugin did not receive any new update. So it should be working as previously.
Do you see the issue with normal posts and pages?
Did you install any new plugin related to this?
If you were not able to find a clue, please create a temp admin user and share the credentials with me to my contact form below.
Contact
I’ll login and look at the issue live.
Thanks,
Aakash