I have an app that is the latest version of a one I've been working on for a while. One of the fields is called Status, with possible values of Open and Closed. The datasource is a SharePoint list, and Status is a Choice column in that list.
Everything was working fine, originally. When I was building the form, the Power Apps correctly added the Status field as a dropdown, and I had a Choices function pointing to that column in the data. The dropdown was correctly displaying either Open or Closed for each item. But in the course of finalizing the form, I needed to remove the Status field and re-add it, and when I did, the app created it as a dropdown, but it wasn't showing any data.

When I checked the Items, it had the expected Choices function, but references a field called "field_37" instead of Status.
As you can see, when I place the cursor at the end of the function, it shows the potential values for the Status field, but it's not showing in the dropdown the data for the particular record.

I have tried to correct the formula to reference "Status" instead of "field_37," but the app flags it as an error. I am completely at a loss. I don't know where this "field_37" designation is set or where it comes from, and I don't know how to fix whatever is wrong.
EDIT: I made another discovery. This edit form is populated based on the selection on a gallery. The gallery has a Filter to only display records for which Status is "Open." As an experiment, I removed the filter, and suddenly my Status dropdown is displaying data.
Mind you, all of this was working before. I have no idea what has occurred to wreck everything.