Metal Gear Solid: Peace Walker

[ginnedup]

I've got a possible problem with MGSPW on PPSSPP 1.2.2 for Win 7.

For some reason, I can't use the Mate Tea item at all; it says to select from the equipment menu, then use with the R button. I do that, but nothing happens, even when I have less than full psyche. The little bar with the word MATE and the rank stars moves a bit, but the item doesn't get used.

I've been playing with invincibility, 100% camo, infinite items, and max heroism cheats active, but I also tried without any cheats active and it still didn't work. Maybe this is a bug of some kind?