Question Editing not working anymore

It wasn't what I meant, the .min files are ok. There are extensions such as jch_optimize and also many Joomla templates contain already optimize options. You find this in your Joomla template setting. Such templates should also have an option to exclude files.
In this case you would have to enter to the exclude field this path: /media/kunena/core/js/ckeditor.js

All suggestions didn't work
I tried downgrading template version: with Blue Egle V1.5.5 the editor problem disappeared 
Looking forward for a new version of Blue Eagle fixing definitely the issue with all improvements included in V1.6.2
Fabio

Looking forward for a new version of Blue Eagle fixing definitely the issue with all improvements included in V1.6.2

Please wait also with the update to Kunena 5.2.3 until Blue Eagle 1.6.3 is ready.

I've been trying :
with purity_iii (with and without js optimization)  : same problem (even exluding /media/kunena/core/js/ckeditor.js  from optimzation)
with T4_blank template (with and without JS optimization) : same problem 
kunena editor works for some people (whatever exploitation system or navigator) but not for others
I've beeen trying a downgrade to kunena 5.2.2 => doesn't make any change

Just try, on my PC : doesn't work anymore with firefox or chrome BUT works with edge....

It is not optimal to add questions in already exists topics. Please create in the future your own topic. Even though I've reread the whole topic, I don't know what your post relates to. You can't edit a message or have you none at all an editor? That's two different problems.

Sorry for that.
i've got no editor (impossible to create New post) and impossible to edit an existing post for the same reason.