Yes!! With the LATEST update (3.0.2 in dec 17) they finally fixed the built-in element blocker (previously an add-on) which was broken for me ever since Quantum FF came a long. Infact it's way way easier to use now as there's no need to enlarge/shrink the blocking area and almost guess if you'd end up blocking many more elements on the page than you mean to!. 5 out of 7!