Cant get controlconfig to work

[fgeds]

okay im trying to set custom keyboard binds for each game. Assuming --controlconfig modifies controls.ini. Ppsspp version is 0.9.9.1.718, win64. Nothing is read-only anywhere.

This works:
C:\Games\ppsspp\PPSSPPWindows64.exe --config="c:\temp\temp-settings.ini"


This doesnt:
C:\Games\ppsspp\PPSSPPWindows64.exe --controlconfig="c:\temp\temp-controls.ini"

In fact adding --controlconfig makes the program ignore ppsspp.ini and ignore any changes made, in both settings and controls and reverts to default after program restart. Its like ppsspp doesnt understand what controlconfig means and is getting confused.