Headings in PrestaShop BO is using font: ubuntu-condensed_latin
The version of the font, by PrestaShop 1.7.7 is 1.43.0
This version does not include all polish characters. These are missing: 艅 臋 膮 膰 藕 偶
This cause a fallback to an other font.
The font must be updated to newest version: https://libraries.io/npm/@openfonts%2Fubuntu-condensed_latin/1.44.2
Hi @MathiasReker ,
Thanks for the report.
There's indeed an issue in some area in the BO.
Example in dashboard :

Please stay tuned !
Thanks @NeOMakinG :-)
You're welcome!