When I ran the wxPython Demo today for the first time in a couple of weeks, I noticed that the Demo Code tab is showing block symbols containing numbers instead of regular characters. It also happens in the demo’s STC examples, but the rest of the demo appears OK.
I assume this is a font problem. I ran the demo again from the command line and none of the messages output there refer to fonts. If I copy/paste the blocks into a text editor program, the code appears correctly there. The problem is not occurring in any other apps on this PC, including several of my own projects that use the STC.
I am using Python 3.8.5 and wxPython 4.1.1 on Linux Mint 20. The wxPython Demo app is the 4.1.1 version downloaded from extras.
How can I get the demo to display the code correctly?