Goddamnit. Forgot that Master codes are also abbreviated as (M).

Ok. NOW  issue 6367 : https://code.google.com/p/dolphin-emu/issues/detail?id=6367 is fixed.

I wish I'd remember these things before committing and not after.

Data/User/GameConfig/GP5E01.ini

@@ -7,9 +7,6 @@ EmulationIssues =
 #Add memory patches to be loaded once on boot here.
 [OnFrame]
 [ActionReplay]
-$(M)
-044E31C5 88000000
-C4154E00 0000FF00
 $All Mini-Games Unlocked
 044E31C6 08000000
 0222A77C 0005FFFF