It’s untested Alpha software which costs ~50$ but it’s free for you so don’t complain (this could have been a official answer from GOTD).
For this price, every normal person would buy Business License of IcoFX, a program with shitloads of more features, the best commercial icon maker/editor from my POV, even the IcoFX 1.64 Freeware is more professional than this ~50$ Alpha bug scam.