In the general time date window in Gnome in the top bar. If i click from a month to the next month it will simply limit itself. 
However if I change the month by clicking the errors and then click on the date of my appointment for the month there's no problem.
Hope this make some sence. It's a bug since it's counter intuitive the entire week is always show and furthermore once it's activated the only way of getting rid of it is by leaving the window and starting a knew. If you switch month the bug persists if you have activated it.
