Cannot use "x in someList" where x is dynamic?

[Chuck.Esterbrook]

class X

def main is shared

x = 2 to dynamic?
assert (x to int) in [1, 2, 3] # works
assert x in [1, 2, 3] # error: Cannot convert type "int?" to "int"

[Chuck]

This may be related to Cobra's treatment of DLLs where argument types are wrapped by NilableType?. This breaks down for generic types like List<of T>.