Is there an issue with ckeditor5 balloon? Seems not to work with plugin.

Hello all,
it seems that the ckeditor 5 plugin does not work if type is ckeditorBalloon.
ckeditorClassic runs fine with the same example. But if I change to ckeditorBalloon, the editor field will not replaced with the ballooneditor. I used the cdn from ckeditor for ballon and also for classic (of course not at the same time).
Is there a way to get the balloon editor work with datatables editor?
Frank