Hello again, 

It's an embarrassing thing to say, but I've just noticed on my first walkthrough of the game a bug that may have been consistenly going on for at least a few hours.
I have an Island Aumaua with the racial Ability Armed to the Teeth, which grants an additional quickdraw slot to the hero. So far so good.
After a few savegames, I noticed that the weapons on my third quickdraw where dyed in red and I could not equip them anymore. After removing them from the slot, a padlock appeared on it as if I had not acquired the ability and now I cannot use it.
I've change instances, reloaded previous games-though, as I said, I didn't quite catch it on time- but the problem still persists.

Here's a screenshot of the character sheet, the inventory and the savegame file:

http://postimg.org/image/4q0w4odu3/

https://mega.co.nz/#!Kxo2BaIQ!WTJ_IohQ5II8KzRX-WKPe7ou0PG9TY36wQld51uWwk8

Hope that helps.

IcosahedronXIII

Yep, I'm having that issue too.

Yeah, same here. Already reportet it:

http://forums.obsidian.net/topic/72476-bug-additional-weapon-sets-dissappeared/

 

Apparently, nothing can be done for now.