My OS is also Win7 x64, but I never encounter such issue for F12se. Maybe it didn't save the correct windows size in INI when closed?
Bug: sometimes when I open the editor, it's window gets minimized to a tiny size so I can barely notice it on my screen. Setting minimum width/height for the main window should help, I think.
I know I'm not the only one who experienced this.
OS: Windows 7 x64
I didn't find any bugs in loading window size from ini file. But as you suggested I added minimum width and height. If width or height < 300 it is set to 640 or 480 respectively.
Actually it has already saved the window position, size, and maximized or not in the INI.Good you fixed the problem but i have an alternative idea, make the program start maximized and make it save the last position/size it had when it was closed, several programs do that.
[window]
h=768
maximized=0
w=1024
x=320
y=120