I’ve encountered a problem while using your theme along with Advanced Custom Fields Pro plugin. When I choose Relationship, Post Object or Post link, I’m unable to choose Filter by Post Type or Filter by Taxonomy options. The problem seems to be, Select2 used in ACF plugin beeing drawn way below and offset of actual backend view content. You can see it on screen below:
It also doesn’t work on accual add/edit page.
When I change to the default Twenty Seventeen theme everything works fine:
So, I guess, Your theme must affect somehow way the Select2 is drawn.
My WordPress version is 4.9, AFC Pro version is 5.6.6, JNews also dowloaded yesterday, so newest.
This Relationship feature in ACF is crucial to my website, can you help me fixing your theme?