There has been this Issue before.
will there be an update here?
See here: https://wordpress.org/support/topic/problem-after-update-56/
Hello,
Thank you for contacting the support and sorry for any inconvenience that might have been caused due to that.
Sorry for the issue you are facing.
That issue is usually due to some plugin causing a Javascript error before our Javascript loads, causing to don’t load the panel as it should.
To determine that, please follow this troubleshooting guide:
https://rankmath.com/kb/check-plugin-conflicts/
Please let us know if you find the culprit.
Only the site admin would know and your users won’t be affected by this troubleshooting.
Looking forward to helping you.
Thank you for the instructions.
I was able to fix the problem.
The ImageInject plugin provided the behavior described. I have it deactivated now.
Hello,
We are glad the issue is resolved.
If you do have another question in the future, please feel free to create a new forum topic, and it will be our pleasure to assist you again.
Thank you.