Whilst testing for the #155 issue, I was unable to replicate the bug on a clean install targetting that branch.
I however did run into a separate issue where following the same instructions on a clean 11.x installation, the selected media element is not actually inserted into the page. I'm not sure if a separate media UI issue should be created for it, or addressed as part of this AJAX. But the commit for it is available here if it needs to be moved out.
I was unable to replicate the #168 issue. I've attached a copy of the latest PR, and if you're still having issues, please provide exact instructions on how to replicate on a clean 11.x installation with just the patch applied.
codebymikey → changed the visibility of the branch 2842525-ajax-attached-to-views-exposed-filter-no-variants to hidden.