Videos playing with jerky movement in Leap 15.6 browser?

[hui]

Firefox flatpak font issues:

How to fix bad font rendering of firefox-flatpak?

Hi, I am using Gnome 41.8 and Firefox flatpak version. I noticed fonts appears in some website and I did not change any settings as I am new to Linux and especially openSUSE. I really need help to resolve this. Thank you for your kind attention and time. [font_firefox]