Arrow Functions not listed

[ugrpla]

Class methods declared via arrow functions are not listed in the tree view.

class Article extends Component {
    changesection = (section) => {
        this.setState({section});
    }
}

[nicolashainaux]

This seems to work in current version of symbols-tree-nav, though the matching function is sometimes highlighted, sometimes not (this seems to be a bug).

[fgenoese]

This bug still seems to be present for me. Who else is experiencing this?