### Why doesn't show() render latex properly?

The following code:

```
import numpy as np
P = np.matrix('0 0 20 20; 0 20 20 0')
show(P)
```

Gives me the output

```
[[𝟶𝟶𝟸𝟶𝟸𝟶]
[𝟶𝟸𝟶𝟸𝟶𝟶]]
```

In old sage, I guess around 6.0 or something, the show() command would render a proper latex matrix. I.e like you would see in a mathematics textbook.

Is there any way I can get this functionality back?

Thanks.