`^"` in regex breaks matching identifier highlighting

[YellowAfterlife]

5.3.4.651 / 77e3c9b687

Sample snippet:

class Main {
    static function main() {
        var rx = ~/one/;
        rx.match("one");
        rx = ~/[^"]/;
        rx.match("one");
    }
}

Screenshot: (rx would normally highlight, but with this it doesn't)