<span> not applying line-height properties after switch to Wayland

[joomlafun]

Description If I add via the inspector : span { line-height 1}; the text shows as normal If I don't add this, the text lines stack up on each other.

Last modifications on my system : switched from plasma X11 to plasma Wayland and swichted from Firefox flatpack to Firefox snap

To Reproduce Steps to reproduce the behavior: Open whatsapp for linux and check any text

Expected behavior text lines should not show stacked on each other

Environment Kubuntu 23.10, plasma, KDE, wayland flatpack

Could I overide the web.whatsapp.com/page temporarely via Userchrome.css or a firefox extension?

Screenshots buggy situation : solved with setting line-height: 2 for spans