Problem of the publication of material from the site

Hello. Thank you for your wonderful product. This is the best component that I have ever met.
But unfortunately i found a small bug, when i try to publish materials from front end of my site. In the material adding menu from front end of my site I choose a specific category. But on the site when i add these categories to list, they are separated by a comma and no possibility to choose just one category.
How can I fix it?
Thanks in advance for your help.

Not who do not know how to fix it?

I am also wondering about this logic.
I think it will be more suitable to make a multiselect/select (chosen with radiobox) list of categories i choose in administrator panel.

I, too, are interested in this issue :

ok, i think is more faster to solve problem with own hands
so i made some changes in
\components\com_flexicontent\views\items\tmpl\form.php
now in frontend are radiobuttions of categories.
first buttion is checked to prevent of sending empty value.
in file you may uncomment string to replace radio to checkbox (for multiselect) BUT there is not verify for empty values!

hello can explain your modification for flexi team devellopper ?
regards