I now have the "invisible button but able to click on it" contract bug fixed, and I believe I have fixed the occasional problem with the screen changing to the Last match of the 1st season and showing the results of that match. It happened after you didn't make the playoffs, I assume? If so, it is fixed now.
The fixes will be made available in a soon to be released 1.6 patch for the game. I'll be adding a few new enchantments to the game too.
