Normal requester chest has 20 logistic request slots enabled. If I add something to the last slot, 10 more open up (probably endless). Medium requester container from K2 only has 18 enabled, and if I fill up the last one, new slots do not open. If I copy/paste requests from requester chest with more than 18 slots filled, the extra requests ARE copied, and robots start delivering everything. But the extra slots are still not visible, I can't access them to change or delete them.
Seems more like oversight than intentional behavior, because requester warehouse (also from K2) behaves exactly like the base game requester chests (20 base slots + endless more).
Game version: 1.1.35
K2 version: 1.1.4
Other mods: I noticed it in K2+space exploration game with lots of QoL mods, but it can be replicated with only "creative mode" and K2 mods enabled.