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Why doesn't '==' or '!=' work for mixed forms?

I have the following setup

M = Manifold((4), 'M', field='complex')
U = M.open_subset('U')
x = U.chart(names=tuple('x_%d' % i for i in range(4)))
eU = x.frame()

Form0 = M.mixed_form(comp=([0,0,0,0,0]))
Form1 = M.mixed_form(comp=([1,0,0,0,0]))

Clearly Form0 and Form1 are distinct mixed forms of M, but when I run

if Form0 != Form1:
    print('Not Equal')
else:
    print('Equal')

I get 'Equal' as the output, what's going wrong?