Removing Pull Out Drawers

[evh5150]

Have a 2021 BT5210 and cannot fully remove the pullout drawer from the cabinet... adjacent to the sink.
When I pull out the drawer there is usually a tab to push on the exposed slide rail for release.
I see only this black plastic clip with a tang but does not disengage the fixed slide rails to facilitate drawer removal
Any thoughts?

[evh5150]

Got it!
The left hand slide release catch is what held me up. Not working. Cheap plastic