IsField method not returning correct value

The isfield() method is not currently working for me. Check out this output from the console:

I can see that my object (TFORM) is there, and that it has a field named 'T'. However, when I run isfield(TFORM, 'T'), I get a 0 result. What gives?

K>> TFORM

TFORM = 

projective2d with properties:

                 T: [3x3 double]
    Dimensionality: 2

K>> TFORM.T

ans =

    0.9889   -0.0068   -0.0000
    0.0003    0.9918   -0.0000
    3.7452    5.5412    1.0000

K>> isfield(TFORM, 'T')

ans =

     0