1. Get the file and open it.
2. Open the second MIDI item
Serious trouble #1: Notes get deleted when pasting items
3. Select any note(s) you want and copy (CTRL+C)
4. Paste it/them, wherever you like
5. The first note (C2) suddenly disappeared! (--> Bug!)
Serious trouble #2: Step-Input places notes one grid unit before the edit cursor
3. Activate Step-Input and go to the beginning of the item
4. Press a key on your keyboard
5. A very short note appears, ignoring grid settings (--> Bug!)
6. press some more keys on your keyboard and you'll clearly see that the notes are placed one grid unit after they actually should (--> Bug!)
Systen: Reaper 4.02, Win 7 x64