a strange bug: the Bootstrap 5 Dropdowns button
Sorry we not help, There you see conflict Bootrap5 from Joomla with Bootsrap 5 from template And on page where this not work; we see very many include bootstrap js files.
True say, need turn off every thing on that page - and check which module component added conflict, after check what this component included
If you check attachment img
- there 2 handlers for bootstrap dropdown process - if we turn off any 1 - all start work good