sym(1/3) bug?

On https://www.mathworks.com/help/symbolic/create-symbolic-numbers-variables-and-expressions.html I see

But when I try running this I get

Is this a bug or am I doing something wrong?

Answer 1

[Adam Danz]

Check your symbolic preferences.

sympref

ans = struct with fields:
           FourierParameters: [1×2 sym]
           HeavisideAtOrigin: [1×1 sym]
            AbbreviateOutput: 1
               TypesetOutput: 1
         FloatingPointOutput: 0
      PolynomialDisplayStyle: 'default'
    MatrixWithSquareBrackets: 0

If the FloatingPointOutput if true change it to false

sympref('FloatingPointOutput',true);
sym(1/3)

ans = 

0.3333

sympref('FloatingPointOutput',false);
sym(1/3)

ans = 

[Adam Danz]

Andrew Dabrowski's answer moved here as comment

Ah thanks, that was it!