I'm using Windows Subsystem Linux with Ubuntu 20.04.3 LTS on my laptop (OS: Windows 10 Enterprise LTSC).
It worked flawlessly until a few days ago when I suddenly could not use less, nano, screen etc. anymore. Whenever I use one of these commands, I just see a blinking dash in the top left corner but no text is visible:

I can get back to the normal console when pressing the respective keys (e.g. q for less, or Ctrl+a+d for screen), and then I can see the content from the previous command:

So there seems to be something broken, but if possible I would like to not have to uninstall and reinstall all of WSL since I would also lose my conda environments, etc.
WSL System Information:
Distributor ID: UbuntuDescription: Ubuntu 20.04.3 LTSRelease: 20.04Codename: focal