Version: Unreal World 3.63, Linux/Steam build, unmodded
What happened: Nilla the old kuikka-tribe man asked me to bring him 30 bunches of mother pipe leaves. After a number of adventures, I succeeded in collecting enough, but due to freshness they formed two stacks, neither of which was 30 by itself, but combined were 30 overall. I handed each to him via the quest screen, and he remarks "this is not all that I want" (or something similar. Upon handing him an additional single bunch of leaves, he remarks "you've fetched me all the precious bunches", and the quest completes.
What's expected: Delivering the exact amount in two stacks completes the quest, rather than needing the exact amount +1.
Steps to reproduce: Have not attempted to reproduce, but presume just handing herbs over in two operations would do so.