Sym Matrices can be Indexed with non-Logical/non-Integer. Bug?

Linear indexing into a sym array:

A = sym([1 2;3 4])

A = 

A(.5)

Warning: Integer operands are required for colon operator when used as index.

ans = 

1

A(1.1)

Warning: Integer operands are required for colon operator when used as index.

ans = 

1

A([1.2 2.2])

Warning: Integer operands are required for colon operator when used as index.

ans = 

But element indexing produces an error

A(1.2,2.2)

Index in position 2 is invalid. Array indices must be positive integers or logical values.

Error in sym/subsref (line 909)
R_tilde = builtin('subsref',L_tilde,Idx);

But note that the error message is about the index in position 2. For a real array the error is the index in the first position.

I assume that this is a bug?

[Bjorn Gustavsson]

It seems to be happy to treat A as a 1-D array, or a 2-D array with rounding of the first-dimension index, as long as the second index is an integer. This is clearly a "feature".

[Paul]

Apparenty it is a "feature." I submitted to Tech Support and the response said a change in behavior has been submitted as an enhancement request. Seems like a bug to me.

I wonder if there are any other objects that have the same behavior as sym objects.