[FTS] Numeric field not stored if custom mapping specifies its type as text

I created a custom mapping for brewery in beer-sample. I accidentally left abv as type text in my field mapping, and I enabled store.

When I performed searches, ABV was not returned. I then edited the index and changed type to numeric. After that, ABV was returned as expected.

I would expect the field to be returned even if it was being treated as text.