I've tested all of the following as of Version 1.3.3 to see if the stalemate detector kicks in and who is rewarded the win.
Note: Version 22.214.171.12431 still shares the same results.
Version 126.96.36.19950 IN THE PUBLIC TEST REALM
-Still no stalemate situation between Escort and Vampire. Gonna assume the same for Jailor and Vampire but I haven't tested it.
Coven Leader (without Necronomicon) vs Godfather = No stalemate
Coven Leader (with Necronomicon) vs Godfather = No stalemate. The Coven Leader cannot kill the Godfather and the Godfather cannot kill the Coven Leader. Game currently is forced to go to a draw.
Potion Master (without Necronomicon) vs Godfather = No stalemate
Potion Master (with Necronomicon) vs Godfather = No stalemate
Plaguebearer vs Arsonist = No stalemate
Waiting for fixes.
Pestilence vs Arsonist = No stalemate. Arsonist cannot win. Pestilence must attack to win.