[ZeroGravitas]

I'm not sure if this is fixed yet, it seemed to get better then worse over the last few years, but I haven't tried it under the next release:

Getting Ubuntu working behind a proxy seems overcomplicated. At least in the near past you needed to set the proxy in the browser, for the command line, for updates and probably other things individually.

Getting it working for updates is particularly annoying for people not sure what is happening as the errors you receive are, at best, generic "internet not working" errors. Is it possible for a desktop to know if it's behind a proxy? If so then better error messages can be provided. But you should only need to set it once regardless.