Our Snowflake db has, let's say, 6 schemas. Only the one called "Analytics" appears in the UI but all six can be queried in SQL. I created a new database object in Metabase and connected it to our Snowflake database with the exact same credentials as the problem object and it works fine.
And yes, this only started happening with 0.48.1. It looks like the same thing is happening to this user as well.