It's easy to replicate.
1. Start downloading a new map via the website (osu!direct could work too, can't test it because not a supporter).
2. Click on it in downloads so it will automatically open when downloaded (works in Chrome, idk what about other browsers).
3. Go to osu (song list) and open beatmap options menu or mods menu (F1 or F3).
4. Wait for map to open automatically in the background.
5. Watch osu being bugged. Can't open the menus anymore, the song list is gone, nothing works etc.
Works on latest Stable build. // b20151016.7
1. Start downloading a new map via the website (osu!direct could work too, can't test it because not a supporter).
2. Click on it in downloads so it will automatically open when downloaded (works in Chrome, idk what about other browsers).
3. Go to osu (song list) and open beatmap options menu or mods menu (F1 or F3).
4. Wait for map to open automatically in the background.
5. Watch osu being bugged. Can't open the menus anymore, the song list is gone, nothing works etc.
Works on latest Stable build. // b20151016.7