tab "{id}": config.source is replaced by the derived source built from from: "{parent}" - set the narrowing (where/group/join/…) on the tab descriptor itself rather than on config.source.

Warnings reference › tabs.source.overridden

Identifier

tabs.source.overridden

Raised by

Tabs

Since

1.50.0

What happened

The tab declares both from (derive from another tab) and its own config.source. They cannot both be the tab's source, and from wins: the source you wrote is replaced by the derived one, so any narrowing expressed inside it is gone. Everything else in config is applied as written.

The fix

Move the narrowing up to the tab descriptor, where the module reads it and folds it into the derived source.

The smallest fix

tabs: [{ id: 'late', title: 'Late', from: 'all', where: { field: 'due', op: '<', value: today } }]

Reference

Covered in full at the API reference.