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Issue description:

In version 1.15.2-9.9.6.397 flamethrower's fire entity properly smelt block in heat/inferno mode, and set fires in inferno mode, but still deals no damage to mobs.

Steps to reproduce:

1.Grab a flamethrower filled with hydrogen;
2.Set the flamethrower at combat mode;
3.Spit the flame at some innocent creature.

Version (make sure you are on the latest version before reporting):

Forge:1.15.2-forge-31.0.1
Mekanism:1.15.2-9.9.6.397
Other relevant version:

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Closing this as it is fixed in 9.9.7 which is approved and on curseforge.