I think this is a lost cause but attaching one of the bugged savefiles. This one
presents a bug at inventory. Some NPCs in town may also be bugged although I
probably replaced most of them (and deleted one third of the town on the process
because unknown slowdowns at town)

Please apply the "playtest.diff" patch provided or you may find other unrelated
bugs. (I think it is unlikely anything on the diff is related to this bug
though. They mostly adds a new skill, introduce some core resources, rewrites
Butch, and includes Act 2.)

This is the second time such bug happens. Ubuntu MATE 16.04 LTS, 64 bits
notebook. (In case you fail to reproduce)