I bought this game and it very pleasantly surprised me that Polish names of cities are spelled correctly. Good job!
There are a few I would change (Łuck/Luck instead of Lutsk, Równe/Rowne instead of Rowno) but the main bizzare name is Ivano-Frankivsk.
It was called Stanisławów/Stanislawow all the time till Soviets change that Polish name to Ivano-Frankivsk in 1962.
I hope it can be changed in next patch/gold version.
PS2: There is also Przesmyl (near Tarnow-Lwow) which is spelled wrong Przemyśl/Przemysl.
It's sad but this city is always misspelled. Anyway it's also called in Ukrainian: Peremyshl or German: Premissel, but never Prze S myl.