I have three questions regarding Sticky Bombs.
1. Does only the creature who was hit directly take the splash damage in the next round? There seems to be some disagreement on the forums about this.
The first sentence of the description seems to imply that it applies to all creatures that took the "initial damage" from the bomb. The second sentence could either be interpreted to say that it only applies to directly hit creatures or it could just be a clarification that the directly hit creature does not take the full damage all over again.
2. Does the "afterburn" from the Sticky Bomb only do damage or does it apply its other effects, too? So, does a Sticky Tanglefoot Bomb, for example, have a chance to entangle in the next round?
I'd probably say "No" because the description of Sticky Bomb only ever talks about damage, not about other effects like sickening or entangling. On the other hand, it would make sense either way.
3. How does Sticky Bomb interact with Targeted Bomb Admixture? I don't think I've seen any consensus on this. Technically speaking, Sticky Bomb applies the "splash damage" on the next round. However, Targeted Bomb Admixture doesn't splash at all, meaning that there is no splash damage to apply.
On the other hand, Targeted Bomb Admixture doesn't explicitly state that, say, splash damage is zero. It just says that it doesn't splash which, I'd argue, isn't quite the same. So, I'm gonna guess that a Targeted Sticky Bomb is going to do the splash damage to the creature on the next turn, even though the bomb initially didn't splash.
However, if that is the case, does the doubled Int modifier apply to the afterburn damage as well? The description for Targeted Bomb Admixture technically talks about all bomb damage, not just the initial hit. But gleaning any information about "splash damage" from an extract that explicitly doesn't make your bombs splash seems sketchy at best.
On the other other hand, if a Targeted Sticky Bomb doesn't actually do any damage in the next round, there seems to be absolutely no reason to use Targeted Bomb Admixture once you have Sticky Bombs. After all, TBA bombs only affect one creature and merely add your Int modifier to the damage again while Sticky Bomb still has the normal splash damage and an additional splash damage to at least the directly hit creature which is much more than merely your Int modifier.