Is the extra damage from jabbing style multiplied on a critical hit?

[noble peasant]

I didn't see a FAQ saying yay or nay. It isn't precision damage though however I feel like it might be considered "additional damage dice" kinda like a flaming weapon.

[SlimGauge]

No. Generally, extra dice are not multiplied unless something in the ability granting extra dice says otherwise. Nothing in Jabbing Style indicates that it is an exception.

[noble peasant]

Ok, it sounded like additional dice but I just wanted to double check. I've been wrong before surprisingly. :P

[Inspireknot]

Technically, while it is extra damage dice, the rule specifically states "Exception: Precision damage (such as from a rogue's sneak attack class feature) and additional damage dice from special weapon abilities (such as flaming) are not multiplied when you score a critical hit". And it not being precision damage nor additional damage dice from a special weapon ability would mean that RAW puts it as multiplied. The General interpretation of extra dice not multiplied while static bonuses are is a common house rule for RAI. It is best to ask these questions of whomever is running your game or field the question to your table for a consensus of the players for how they feel one way or another.