Widget bad rendering

Hi,

I would like to use Ultimate wp query search filter as a widget. And I could use it but while the page reloads post_tag text shows next to checkbox as it should but when finishing to load just appears under checkboxes resulting realy ugly.

http://screenshot.net/6z18rap

How I can fix this?

tanks in advance!

https://ww.wp.xz.cn/plugins/ultimate-wp-query-search-filter/