In certain cases Zak keeps on walking while not moving it all. While playing the game I managed to trigger this bug on several places (see save-games 2,3,4) but I found a way to reliable reproduce it in the shop. Load the save-game nr. 9, enter 4 digits for the card. Zak will say walk to the front and say "Gee I hope I'll win". As soon as this text appears, wait 1 second and click on the shopkeeper. This will cause zak to walk to him. But before he is there the shopkeeper will say something and this cause zak to stop moving, but keep on walking.
I have tested this with ScummVM 1.0.0rc143718 on Windows XP SP3 and Zak-V1-C64 (English)
Ticket imported from: #2854037. Ticket imported from: bugs/4594.