HELP - filter data-bs-toggle class change | funnelback filter search not working

Matrix Version: v6.81.0

Hey all, help required if anyone has any idea what is causing our search pages to load and loop constantly after trying to use the filters on these page:

https://www.ros.gov.uk/about/publications
https://www.ros.gov.uk/insideros-blog-search?query=keeper

When you try to use the filter to search for specific results it loops and loops constantly. I have a ticket open with no luck on debugging this.

This was after our Bootstrap upgrade from 3 - v5. We changed the toggle class to data-bs-toggle which is the new bootstrap 5 class and can’t seem to figure out what is causing this.

Any ideas?
Thanks

Solved, the button had no type therefore this was making it submit over and over. Squiz support identified this fix and also sorted some more new BS5 classes.