"Query results empty" when making Firestore query with boolean filter

[GimChuang]

Hi, thank you for building Budibase!
I just connected to my Firestore and tested some simple queries (for example, query with a string filter) with success. But I alwalys get "Query results empty. Please execute a query with results to create your schema" when I try to query with a boolean filter.
I have a "tests" collection in my Firestore database's root. It contains 2 simple documents "id1" and "id2". And they both contain a bool "myBool" field.


And this is my query in Budibase. It always gives the blue warning. I was wondering if I missed something really basic? I would really appreaciate if anyone would shed some light on it!

[GimChuang]

Issue raised: #11139