Tell us your problems. When I end it, I will tell Mark Overmars the bugs you found. If he already knows it, do not post it please. I will tell the glitches and bugs that are not known.

Bug I found: Changing an invisible object will not work, it will stay the same. (That is one i will not tell Mark)

The Suggestions forum is not the place to report bugs with Game Maker. If you believe you found a bug with Game Maker (and it isn't just a bug with your code) then send it to the HelpDesk with instructions telling them how to recreate the bug.