I've reported this as a bug and sent my save game, but I'm hoping to find out what causes this - flammable stuff blows up when my companions walk on it.
Things I've tried and didn't work: stowing torches, removing Karlach from the party.
Things that do work: controlling the characters (even Karlach) stops this from happening.
Is there something that I'm missing? What would cause fires to break out when just walking over oil? It feels like Cursed Oil from D:OS2
