Fade In/Out Black or White not working properly

[Liberty Bull 23]

Whether its

[0,"BLACK",3,1] call BIS_fnc_fadeEffect; 
 sleep 5; 
 [1,"BLACK",3,1] call BIS_fnc_fadeEffect; 

in initsqf

[1, "WHITE", 5, 1] spawn BIS_fnc_fadeEffect;

in a trigger, or any sort, the blur effects of the function work, but the black or white part of it seems to be broken, only appearing for a nano second in a "blip". Am I doing something wrong or is the function bugged?

 

I discovered this from trying to simply have the mission fade in from a white screen.

 

*** Edit ***

Update, after trying for 30 minutes with the various iterations of the fade functions before I posted this, then doing more searching afterwards, I discovered that

titleText ["","WHITE IN",7];

works. 

[7erra 629]

Can't confirm, works for me. Maybe you are not allowing suspension? Safest bet is to always spawn the function.