Problem/Motivation
A page with multiple Views exposed forms with AJAX enabled will trigger all form instances on the page because the form ID is the same when one of the forms is added to the page via AJAX. Also, this Drupal 7 issue is the same issue, but I didn't have a need for the cache fix there: #1735096: Allow multiple instances of the same exposed filter form on a single page
Proposed resolution
Use the Views DOM ID to have unique form IDs.