7.1.6 ee('CP/FilePicker') produced dialog shows "loading…" forever if file field is not one of the fields

[tjdraper]

In my field type, Ansel, I use a native file picker dialog. And we recently fixed a related bug, but now that it's partially working, I've discovered more bugs.

In this bug, if there are no files/images present in the source directory, and there is no file field, the dialog never shows "no results found" It only continues to show "loading" with the loader behind it. See screenshot.

Since I have uploads enabled, it should show a "drop file(s) here to upload" screen. When I include a native file field in the channel's fields, it works properly. See screenshot where I've added a file field to the fields in the channel: