Defend doesn't slow

[mystic_elf]

So Defend doesn't seem to slow my units. The same ability works on other units, like in all of (race) Harad's spawns and the (race) Easterlings, but it does not work with (race) Isengard's units. There are 3 different units with the same ability, but when I use it, the MS lights up green and doesn't decrease MS at all, while every where else, with any other race, it turns red and slows as its supposed to. Any reason for this?

The races aren't really different races, but this shouldn't effect defend anyway...

The Movement Factor value is .30, and I switched it up with .50, but I got the same results, it works on any other units but the 3 units Isengard has.

 

[mystic_elf]

BTW, I'm using WEU, and some people have suggested it might be a WEU error?