When I put wysiwyg fields under a tab, on first load it looks normal. But when I switch tabs in post editor, all wysiwyg buttons disappear and the textarea is not writable anymore. Sometimes page refresh helps but most times it does not.
As soon as I remove the tabs, all wysiwyg fields start working perfectly again. This can be reproduced 100%.
I even tested with all other plugins deactivated to make sure that there is no interference.
Can you help? I actually need tab functionality....
Our development team is aware of this issue and is working on it. Please wait for the next update to fix this issue. For now, you can switch to the tab Text of the WYSIWYG field to add the field content.