Materialized views are loaded only partially

Hi, I have a problem on something that has worked great for a lot o f time and suddenly broke without any change at all from our side, so I was wondering if it might be related to something that is now different in the new version of metabase.

Basically, I have a few materialized views that collect data in order to be better queryable from our non-tech friends.
Suddenly, the most important of these views (which is recalled in almost 80% of our questions) has stopped loading several columns and shows just a small bunch of random ones.

If I input with the query editor, the view is correctly recalled, but if I want to use field filters metabase won’t see the majority of fields. This resulted in braking many dashboards that were based on date field filters.

Any ideas on how to fix this? Thanks