Tor Browser breaks rendering of fonts in applications launched from Tor Browser
Tor Browser adds few additional environment variables which breaks kdialog
and likely other applications also:
FONTCONFIG_PATH=/home/user/tor-browser_en-US/Browser/TorBrowser/Data/fontconfig
LD_LIBRARY_PATH=/home/user/tor-browser_en-US/Browser/TorBrowser/Tor/
screenshot: https://i.imgur.com/1ItY3jR.png
(This issue was originally reported against QubesOS.)
Perhaps do not modify environment variables for applications launched from Tor Browser?