Unusual rendering and artifacts in font glyphs

[nashpatty]

Cascadia family version

2111.01, 2110.31, 2108.26

Cascadia family variant(s)

Cascadia Mono (the version without ligatures)

Font file format(s)

.ttf (variable), .ttf (static)

Platform

macOS 13.6

Other Software

vscode
iterm2
jetbrains products
font book

What happened?

Cascadia Mono and cascadia mono pl are showing weird rendering and artifacts in the *.ttf variant of the font, for both static and variable font files.
This issue is not present in the *.otf statics.

Please note the lower case u t r d and g, and the upper case T E I F J L.
Different characters are affected at different font sizes.

[akiirui]

I have the same issue on Linux. Only the TTF version is affected, OTF version works fine.

[masepi]

Fedora 40, the same issue, only in VS CODE