I don't know what is causing this bug but i've had it for a while now. Fire arrows and projectiles that are supposed to start fires won't actually start fires, I have the fire system enabled too and I can't figure out what is causing it.
Mod List:
"AlchemistNPCLite",
"BaseMod",
"BossChecklist",
"BossExpertise",
"CalamityMod",
"CalamityModMusic",
"CrystiliumMod",
"Fargowiltas",
"FKBossHealthBar",
"GRealm",
"HelpfulNPCs",
"imkSushisMod",
"Loot",
"LootBags",
"MagicStorage",
"MorePotions",
"NoMoreTombs",
"OreSeeds",
"RecipeBrowser",
"ReducedGrinding",
"SacredTools",
"SpiritMod",
"SuperQuickRespawn",
"TerrariaOverhaul",
"ThoriumMod",
"WeaponOut",
"WingSlot",
"WMITF"