The COMBINING RIGHT ARROW ABOVE combination on that second line rendered both the letter and the arrow as two separate squares, on macOS, in fully-updated Chrom

The COMBINING RIGHT ARROW ABOVE combination on that second line rendered both the letter and the arrow as two separate squares, on macOS, in fully-updated Chrome. It maybe 2017, but this doesn't quite work yet. Not to mention how it falls apart as soon as I want some _clever_ typesetting. Don't get me wrong: I think we can do better than TeX, and in a lot of cases common characters like e.g. Greek characters might be fine, but, uh, we aren't there yet.