the second endergenic generator in this line isn't firing and give the message "pearl arrived while" it says it have started charging.

when counting from the lever starting it shod have started charging 10 ticks before it get's the pearl. and i have the monitor output on "pearl arrived" and loop that right into the generator with vanilla redstone so it points at the generator.
so i'm wondering if this is a bug or if i have missed something. but looks like a bug to me. everything is inside the same chunk.
the mod is version 1.12-7.26
it's part of the enigmatica 2 1.12.2 modpack (-animania)