Ok thats weird. what were your sliders on for that?(I really should add the values beside them for making this sort of thing easier)
Yeah I can certainly add 0.5 increases, the only reason I didn't do that originally was I thought people would get annoyed with clicking the mouse button so much :P
I can have the .5 increases update done in seconds but before uploading a new file I will go on a bug hunt for this rendering problem.
If I can't track it down in the next couple of hours I will upload without. and then find it later. Can you replicate the bug? does it do it often?