https://ask.fedoraproject.org/t/problem-with-kde-font-viewer/13932

This major bug occurs when running under Wayland. A workaround is to set `QT<sub>QPAPLATFORM</sub>=xcb` before starting kfontview so that it runs under X11/XWayland, see [KDE bug 439470](https://bugs.kde.org/show_bug.cgi?id=439470).

在命令行使用 KDE Font Viewer：

```sh QT<sub>QPAPLATFORM</sub>=xcb kfontview ```