Last tested: Jan 19, 2021
Prior to the new explore field picker (in 7.18 and previous), using an empty view_label (e.g.
view_label: "") on a join or field would default to the the name (or label) of the Explore.
In the new field picker (in 7.20 and forward), any fields from a join or field that has a
view_label: "" appear to be missing from the field picker, as they now default to be hidden from the field picker, rather than nested under the label of the Explore name / main view name. The fields are still accessible by searching in the field picker search bar, but this isn't intuitive to users since we cannot see them.
This change will remain as is, as it now aligns the behavior between a blank
view_label and a blank field
To work around this, users should update their
view_label: parameters to reflect the actual label/name of the view they'd like for these fields to be nested under in the field picker.