LinSSID from Tumbleweed repo fails to start

Has anyone else been able to get LinSSID from the Tumbleweed repo working? I just installed it, and it fails to start any graphical UI, giving this error message instead:

qt.qpa.plugin: Could not load the Qt platform plugin "xcb" in "" even though it was found.
This application failed to start because no Qt platform plugin could be initialized. Reinstalling the application may fix this problem.

Available platform plugins are: eglfs, linuxfb, minimal, minimalegl, offscreen, vnc, wayland-egl, wayland, wayland-xcomposite-egl, wayland-xcomposite-glx, xcb.

The Tumbleweed installation is brand new and fully up to date. I am using X11 on the KDE Plasma desktop. Reinstalling LinSSID or xcb didn’t make any difference.

Is there a missing dependency I need to install manually, perhaps?

Usually this indicates that application failed to open display, often due to access control. You do not provide any information how you start it, so it is hard to guess further.