When using OS 2.2.0, adjusting the volume during gameplay using the menu sometimes fails in specific ways.

*If speaker is off (lowest volume), it will remain off if trying to raise volume using the menu. (Restarting the emulator or loading a quicksave at above 0% volume loads the set volume.)
*If speaker is on, trying to lower the volume using the menu will not cause the speaker to turn off.

The volume can be adjusted normally using the Fn shortcuts. In addition, this appears to only affect some emulators.

Affected: NES, GBC, PS1, SNES, GBA.

Not Affected: Lynx, Neo Geo Pocket, PC Engine, WS, Picodrive Beta (installed to sysroot using script), Mario 64.