Steps to reproduce the issue

Good morning, maybe it's not the right place to ask, but I'm trying to avoid displaying all my categories in the select control when I'm going to create a new article and only display the one I select after doing the search.

Expected result

It should be displayed in the select control only the categories selected after doing a search.

Actual result

All the existing categories are displayed, which slows the loading of the form when you have more than one thousand registered categories.

System information (as much as possible)

Joomla 3.8.3

Additional comments