Just create a simple repeatable Group with two fields:
1. a normal text field
2. a WYSIWYG field
Now try to enter some data in your post:
The problem is that you can only edit the first group fields. After cloning another group there is no cursor in the second WYSIWYG field. This issue appears in the classic and the block editor too.
I just found the problem. It's kind of a way the JavaScript works for cloning editors. The problem is the ID of the editor ends with _123, e.g. _{number}. This format is reserved by the clone script to update the editor ID/name. Please just change the ID of the editor and it will work again.
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