Not allowed negative reals despite checkbox being ticked

[Mallaboro]

For awhile now I've been trying to get my doodads to have a max roll angle of -4. something-or-other. Doesn't matter, point is despite "Allow negative values in the object editor" being ticked, the object manager isn't allowing me to give abilities and objects negative values.

I've looked around google searches and I've not read any reason why its not working. (Although, I am running NewGen WE)

 

[defskull]

Hold Shift button and double-click the field
Then, input the "-" followed by values/numbers

 

[mckill2009]

ADDITIONAL:

hold shift again when presing enter after you entered negative number...

 

[Mallaboro]

Yeah, I know all this already. It just doesn't work, is there anything that could possibly stop it from working? I've used negative reals before in a previous map I've made. I'm doing nothing different now then what I did then.