hey, quick bug report: i was unable to launch the game at all on linux, which turned out to be due to the icon the game uses (gui/window_icon.png) being so large (3000x2500px) it caused the program to crash. not being square might result in some problems, too. i recommend resizing the image down to something like 512x512px or 256x256px; it should make no practical difference quality-wise, since window icons are so tiny.
(for anyone looking for a workaround: delete or comment the line that sets the icon (define config.window_icon = "gui/window_icon.png") in options.rpy, and the game will launch without an icon)