Edit: Specified the weapon is set to Dual Hand mode.

Full Game
Windows 10
Xbox 360 Controller

Wildfire Starter will trigger correctly when doing a normal or heavy combo, but when using an Extended or Enhanced combo, Wildfire Starter does not occur on the dual attacks.

This only occurs for Twin Spear type. All other weapon types in Dual mode I tried worked correctly during Extended and Enhanced combos.

To replicate, my exact weapon is Sepal Twin Blade with an Energy Blade on both ends. (Damage type does not matter I tested all four.)

With this weapon and Wildfire Starter equipped, pick any level and preform a normal or heavy combo. Wildfire Starter will trigger with a puff of fire.

Now preform either a Extended or Enhanced combo. Wildfire Starter will not trigger on the dual attack, despite having the same animation as the prior combo.