When entering your Personal Profile, you have the option to expand the recent game list. In order to exclude certain game class types, there is a little settings wheel that allows you to filter: Practice games, Custom Games, Event Games.
If you open the filter, but exit the profile, next time you enter the profile, the filter remains visible.

Steps to reproduce
  • Go to the main menu
  • Open your Personal Profile
  • Expand the game list
  • Click the little settings wheel filter (do not click any of the 3 game filters)
  • Without selecting a filter click back or the main menu button (the red dota logo to the top left)
  • Reopen the Personal Profile

You should now see the filter.