I noticed that
ncdu is not rendering properly, as can be seen from the below screenshot. See that the "unknown character" symbol appears where it should be a line character:
But it doesn't happen if I use, say, my phone to ssh to my PC and run
ncdu from there:
What can the problem be? It looks like a missing font, but what one?
I am using openSUSE Tumbleweed with Plasma desktop and Konsole, but it also happens with other terminal emulators.