1st : When you go to your elite replays, there's the link to another page where you can download your recent games.
If you go back to other menus after you've seen this link (without clicking on it), it will stay visible.
Link to download replays : http://i.imgur.com/FOkol1I.jpg
Bug when going to another menu (on some menu you also have the text): http://i.imgur.com/jTh83Tx.jpg
2nd : If you open a player page, you can see his skin. Now if you press the home button, the skin will overlapp the home menu.
Player page : http://i.imgur.com/aUzaJpp.jpg
Bug when going to the home : http://i.imgur.com/ekIrnUG.jpg
Nerpson's add :
If you want to look to a cool bug, go online and just before the server loads a new map, click the ManiaPlanet on the upper tool bar. You'll load the map in the menu.(that really works)
See: http://puu.sh/iGYD4/d5bfc0147f.jpg
