Thank you for noting that. Can you indicate which city you demanded and how you voted on the claims? This is important because bribes only become available when a vote is close, so your choices are influencing it.
I picked Grand Forks. I didn't remember exactly what was claimed/voted so I ran the turn again and the AI claims were pretty different from one run to the next so I'll note where I think the claims differed.
Yes on Mexico claiming San Diego from America
Yes on Netherlands claiming Luderlitz from Germany (changed; they originally wanted a city from Argentina)
No on Iran claiming Anqarah from Austria
No on America claiming Boston from me
No on France claiming Belem from Brazil (changed; I believe they originally tried to claim Sept Illes from me)
No on England claiming St. John's from me
Yes on Austria claiming Marseilles from France (changed; they originally claimed Warsaw from Russia)
No on Russia claiming Rom from Austria (may have changed, I don't exactly remember)
Yes on Portugal claiming Sevilla from Russia
With this set up, I had the option to bribe England, Netherlands, Austria, Portugal, France, and Mexico over Boston; and Portugal and Mexico over St. John's. In both cases I offered no bribes and won both votes, but did not get to see the results pop-up.