Yeah, I had one other person report this issue. Out of curiosity, what browser are you on? For me in chrome it worked fine, but the other person who saw this problem was using Firefox.
So in Godot there is a setting to specify the viewport size and I set that to 1000x600 and did the same on the upload page. When I tested from my desktop on Saturday, it looked just fine. But looking from my laptop I get a similar (but less exaggerated) issue. I'll have to play around with some settings and see if I can get it fixed so that I know better for the next game jam.
