Fullscreen console - strange input. TGB 1.1.2

When I start the game in windowed mode and change to fullscreen mode using "setscreenmode(1024,768,32,1);" The console.gui input ceases to work correctly. Everything I type becomes strange charachters and its more than just a display problem -- the strings are parsed incorrectly as well. Everything works correctly except the input and the input display line. When I switch back to windowed mode using "setscreenmode(800,600,32,0);" the problem goes away and I can use console.gui normally. I believe I am using TGB 1.1.2, though it may be TGB 1.1.1 or older. If the problem has been solved in a later version, I'll upgrade. Otherwise I'd rather not. Thanks.