JSONB operator unanticipated behaviour

Hello,

I have encountered unanticipated behaviour with a JSONB operator, and wanted to make sure I am not misunderstanding its intended use.

When using the @> operator, I get this result.

select '{"a": [1]}'::jsonb @> '{"a": []}'::jsonb;
 ?column?
----------
 t
(1 row)

However, given the phrasing in the documentation, I would have expected False.

"Does the left JSON value contain the right JSON path/value entries at the top level?"

Particularly given the following:

select '[1]'::jsonb = '[]'::jsonb;
 ?column?
----------
 f
(1 row)

So the keys are the same, the values (when compared directly) are not, but @> returns True. Have I misunderstood the usage of the operator?