Thank you very much Youry_Pershin for the files, Chris_Corby for the Mac instructions [Game update 1.28 [August 2022] - #218 by Chris_Corby], and Cassio Davi for the adjustment for Windows.
In case anyone needs it to be more clear, here are the full instructions for Windows, including Youry’s link.
For Windows users:
Go to:
C:\Program Files (x86)\Zwift\assets\fonts
make a backup of the font.wad file in this folder
replace the file with font.wad from the link posted by Youry
Go to:
C:\Program Files (x86)\Zwift\assets\Noesis\Blend_Data
make a backup of the noesis.wad file in this folder
replace the file with noesis.wad from the link posted by Youry
Go to:
C:\Program Files (x86)\Zwift\data\Fonts
make a backup of all .ztx files in there (8 in total)
replace all files with the .ztx files from the link posted by Youry
The link to the files posted by Youry is:
hxxps://drive.google.com/drive/folders/1U_oM6uzKG6qOLFYMjNCW6yzqZOagmclD?usp=sharing
(Change hxxps to https)
It was found here: