K2 has additional multiselect fields.
With the help of chosen.js, such fields are more convenient to work with, and on a mobile device, it is simply impossible to work without chosen.js.
Additional K2 fields are activated only after selecting a category. That's why chosen.js doesn't work for multiselect.
I tried to fix it with
<?php JHtml::_('formbehavior.chosen', 'select'); ?>
But it didn't work for me and chosen.js doesn't work for multiselect additional fields K2
Please advise how to resolve this issue. Maybe add a POST method on category selection to refresh the page and make chosen.js work for multiselect