non breaking hyphens displayed incorrectly

[criztovyl]

https://news.ycombinator.com/item?id=43881502

looks fine on the web, but with certain fonts some hyphens are displayed weirdly (en dashes look fine, though ^^)

font
Roboto	OK
Roboto Slab	NOK
Ubuntu	NOK
Ubuntu mono	NOK
Noto Serif	NOK
Exo 2	OK
AktionsonHyperlegible	NOK

example roboto slab:

looks fine on the api (which I think the app uses?)

https://hacker-news.firebaseio.com/v0/item/43881502.json?print=pretty

hacki 2.9.7 (fdroid)

Lineage OS 22.1-20250407-microG-FP4

[criztovyl]

those are non-breaking hyphens, it seems!