Cannot Edit Email Body 7.9.7

When I try and compose an email or even if I try and send a template email, I cannot edit the email body or even view it.

Running version 7.9.7

Have check all file permission and doesn’t solve problem.

This seems to be working well for the rest of us.

Do you see any errors in your logs?

Can you try it on the live demo? (user: will pass: will)