i am looking for a way to queue up a unit (esp.cons) during it is in the plant.
in several other mods it works, but i am quite sure there is no widget for this.
anyhow,if the selection goes by hitsphere,i dont see an easy way for it.

it is indeed a hitsphere issue. However, if you feel like making a widget that selects the unit inside the factory when the factory is double-clicked, I can guarantee you that it will be added to CA.

Theres already a function for doubleclicking a unit... Why not just try make it work like everybody else :/

Its an engine bug with non-spherical hitboxes.

Try latest stable, the hitboxes have been reverted to spheres so the problem should be fixed.