Secondary info on a cover entity row?

Seems like it should be a simple problem, but it doesn’t seem like it works:

I have a cover-entity for my garage door:

image

What I’d like is the secondary info line to show a text indication of the current state - i.e. Closed or Open - similar to the media player row:

image

This is pure usability so it’s just easier to see the state it’s in. Is this supported in the built-in row, or do I need do something custom?

UI at least offers some options.
It could be only about my test cover entity, both “tilt” & tilt position" give nothing.