So you don't have 2 seconds to click on your schedule to see what time your game is to be played?? Oh great thats 2 seconds of my life wasted which I could have spent away from my computer....
As already pointed out, you made a mistake. It is NOT a bug. So stop flaming others including a GM for something where the fault lies with you. The rest of us have done no wrong and happily pointed out to you what went wrong and how you can avoid it in future...