Upon hitting the command Alt+4 in the editor, the note placement switches to a non-existent 4th tool. This results in some REALLY strange behavior however. (Too many things to list, but I assume this can be better solved by making this 4th tool not exist while working with this game mode.)
EDIT: Apparently its just the number 4, not necessarily Alt 4.
osu! version: 20150325.4cuttingedge
EDIT: Apparently its just the number 4, not necessarily Alt 4.
osu! version: 20150325.4cuttingedge