Saturation block does not saturate accurately?

Hi!

I'm feeding an input signal to a Matlab-function block through a basic saturation block. I have saturation values +- 0.041 as can be seen in the attached figure. However I noticed that inside Matlab function where I read the input signal into a variable, the variable has sometimes values over the given saturation limits. I've seen that the value can be even 0.041027694184958. Thus it is bigger that saturation should let through. Why does the saturation block let the signal be bigger as can be seen from the decimals?

[Joonas]

P.S Of course the saturation can be done manually in the script but still I'm wondering why the basic saturation block does not work properly.