Created attachment 218376 [details]
Default fonts look ugly and there's no way to change them. Once telegram is compiled with DESKTOP_APP_USE_PACKAGED_FONTS=off, it respects KDE/Qt settings for fonts.
This looks good. Tested it and it seems to work. Please commit it.
A commit references this bug:
Date: Mon Oct 12 21:02:11 UTC 2020
New revision: 552150
net-im/telegram-desktop: Respect user font settings
Approved by: maintainer