Incorrectly displayed Font Awesome glyphs

[Pentalimbed]

Using Font Awesome 6 Free Solid, for example, these glyph will fallback to the default font:

• X
• f424, up-right-and-down-left-from-center
• f6be, cat

Some are displayed correctly like f6ed (hippo) but they are rather random.

[jrmoulton]

We can keep this open for tracking but I believe this is an upstream issue in (probably)swash.