We have an issue with different versions of bootstrap between Helix and RS Directory of RS Joomla.
We asked them this:
The gallery isn't working anymore on this page / website:
https://ronaldkroezen.nl/alle-glazen/8072-hannen-07791
They answered:
What you're experiencing is due to mixing multiple frameworks. RSDirectory! being designed to use the same standard framework Joomla! natively supports, this being Bootstrap 2.3.2, while your template loads Bootstrap 5 instead:
view-source:https://ronaldkroezen.nl/templates/shaper_helixultimate/css/bootstrap.min.css
If the template doesn't use the same Bootstrap version as your Joomla! CMS, or it doesn't at least provide some compatibility declarations for this framework, there will always be such inconsistencies.
You can however try to temporarily switch to a standard Joomla! template like Protostar and you'll notice that this works properly:
https://ronaldkroezen.nl/alle-glazen/8072-hannen-07791?template=protostar
In such situations it would be recommended to directly contact your template developers directly.
DO you have a solution?