OS: Fedora 36
Font: Windows Tahoma
Font config

Problem: Qt6 applications seemingly do not use my fontconfig settings (which are used for everything else, including XFCE, GTK2/3/4 and Qt3/4/5 applications, and web browsers).

I've used strace -e file and $HOME/.config/fontconfig/fonts.conf is indeed being read but it's not seemingly used correctly.

I do not see any error messages in console from Qt6 applications.

I have a suspicion something in terms of fonts support in Qt6 has changed drastically but I haven't been able to find anything.

Here's how Qt5 applications look like.

Here's how Qt6 applications look like.

I've filed a bug report because I haven't been able to find anything relevant.


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