In a PFS character, I chose the Vivisectionist archetype and the Brew Potion feat replacement doesn't seem to have worked correctly. It seems that the character still has Extra Bombs instead. For reference (from the "PFS Organized Play - Additional Resources" document
"...the vivisectionist alchemist gains Skill Focus (Craft [alchemy] or Knowledge [nature]) in place of Brew Potion at 1st level..."
This is probably known, but haven't been able to find a note about it in the bugs list so adding it here.