Dupe glitch.
When using the QIO Dashboard.
Simply press both the left and right mouse keys rapidly and it item count will occasionally go up by one.

Mekanism-1.16.1-10.0.1.424.jar
MekanismAdditions-1.16.1-10.0.1.424.jar
MekanismGenerators-1.16.1-10.0.1.424.jar
MekanismTools-1.16.1-10.0.1.424.jar