Model extending, non default database connection causes errors on create

[ryanmitchell]

We are extending ProductVariant in order to add some of our own logic to it. We have our lunar models using a separate database connection to the rest of the site (specified in lunar.database.connection).

Everything works fine except creating new products. When you submit inside the modal, we get the error:

SQLSTATE[42S02]: Base table or view not found: 1146 Table '{database}.lunar_product_variants' doesn't exist (Connection: mysql, SQL: select count(*) as aggregate from lunar_product_variantswheresku = 123)

{database} is the default database, not the lunar one.

The stack trace is pretty unhelpful, its mostly inside illuminate connection classes and filament interacts with forms. I can't see anything related to Lunar, but obviously this is being caused by model extending.

Are you able to replicate it and see if you can find a solution?