Problem Details:
Trying to open a .osz file whilst you have the "Manage Collections" tab open will completely break the song select menu, making songs disappear, the ESC key as well as the F1, F2 and F3 buttons not work, even whilst playing a song (quick retry key still works though, and so does ALT-F4) and the only way to resolve it is to restart your client.
Video or screenshot showing the problem:
osu! version: 20150721cuttingedge
Trying to open a .osz file whilst you have the "Manage Collections" tab open will completely break the song select menu, making songs disappear, the ESC key as well as the F1, F2 and F3 buttons not work, even whilst playing a song (quick retry key still works though, and so does ALT-F4) and the only way to resolve it is to restart your client.
Video or screenshot showing the problem:
osu! version: 20150721cuttingedge