Versions

• Silent Gear: 2.3.7
• Silent Lib: 4.9.9
• Forge: 35.1.4

Description

Nether wood should be essentially identical to normal wood in stats and traits, so this mistake makes sense, but Nether wood, Warped and Crimson?
Neither of them burn, but are given the Flammable trait by default. You can test this yourself in vanilla by making a structure out of warped wood and similar and then lighting it on fire. They aren't supposed to be flammable, and as such shouldn't have the Flammable trait.

(To clarify - I am not talking about Netherwood, the material added by this mod. I am talking about nether wood, added by Minecraft 1.16, coming from warped and crimson fungus.)