Versions

SilentMechanisms-1.15.2-0.7.0+50.jar
SilentLib-1.15.2-4.6.0+48.jar
Forge: forge-31.0.19
Modpack: Randomly Added Mods v0.1.9

Crushing a blaze rod gives 4 blaze powder.
Compressing two blaze powder makes a blaze rod.

Links/Images

https://i.imgur.com/FdByTVR.png

Also occurs in 1.14

Easy fix: make crushing only give 2 powder guaranteed and only one extra at a low percentage; perhaps 1-5%.