[0.17.60] Infinity chests not usable in upgrade planner

[Calibretto22]

Vanillagame. Version 0.17.60.

I can't select infinity-chests as possible upgrade option in a upgrade planner.

Since it is a "debug item" it'd be expectable that it can only be selected by drag&drop - like in the blueprint-icons.
But not even drag&drop is not applicable.

I'd expect it to work like this:
In the upgrade planner GUI I can drop a infinity-chest as source or target and can select another chest as counterpart in the same row.
The button for the infinity-chest is not shown when clicking on a empty field in the upgrade-planner.

[Klonan]

This is more of a feature request