I have no idea wtf is going on with .glassEffect()

Specifying a custom shape (in this case a music note) results in the tinted bit being the correct colour / shape, but the highlight layer is totally busted for no reason.

It seems like it's ignoring the shape supplied with the `in:` argument? Just seems to be rendering a capsule. I've tried tons of weird combinations but nothing works so far ¯\_(ツ)_/¯

(Contrast is very subtle, so it's hard to see)