Opera Mini support value is always an empty object

[samdutton]

This code:

caniuse.setBrowserScope('op_mini all');
console.log('css-counters', caniuse.getSupport('css-counters'));
console.log('css-sticky', caniuse.getSupport('css-sticky'));

Returns this:

css-counters { op_mini: {} }
css-sticky { op_mini: {} }

However, CSS Counters is supported by Opera Mini and CSS position:sticky is not.

Is this a bug, or am I missing something?