Rendering Problem (maybe just a CSS Conflict) on multiple select



I have a problem with using select2 on WordPress.
I assigned all style and script files. Simple selectbox is working as expected. But multiple selectboxes has some rendering problems. Maybe it’s just a css conflict by the Physio theme. How can I find the problem and solve it?

Here’s a ss about the problem:


Remove the WordPress theme and see if that resolves the problem.


I found the problem. It’s about “beautiful taxonomy filter” plugins css files