Yoh!
Sorry for the late answer. The bug you mentioned is one that I'm aware of and, sadly, had no idea how to fix it. I'm not really sure what cause it. It some times appears when changing zones or entering battle and others just opening the Menu will trigger it. It's really vexing )':
I have some suspicious about what cause it but if they are correct, that will mean that I will have to change many of the mechanics of the game and being honest, it will be easier for me to start from scratch than try and to modify it...
I know it's not enough, but if it helps a little, I recommend you to save the game at the start of each day or before moving from zones so you don't lose that much progress.
About WinRAR, I thought that was the best option, but if it really a problem, I will try to create an .exe file and upload it as soon as I can.
Thanks for your comment, I really appreciate it! Hope you can still enjoy the game!