Make Balena Etcher work in Ubuntu 24.04

It looks like the problem is happening only with Ubuntu Sans fonts family with Ubuntu Sans Mono being the default Ubuntu fixed-width font.

The problem can be fixed by changing the system font setting to Ubuntu Mono or any other like Monospace:

gsettings set org.gnome.desktop.interface monospace-font-name 'Ubuntu Mono 13'

or selecting the font in the terminal preferences:

This is due to recent changes in apparmor.

As a workaround, create the file /etc/apparmor.d/wike (you will need sudo previledges) with the following content

# This profile allows everything and only exists to give the
# application a name instead of having the label "unconfined"

abi <abi/4.0>,
include <tunables/global>

profile wike /usr/bin/wike flags=(unconfined) {
  userns,

  # Site-specific additions and overrides. See local/README for details.
  include if exists <local/wike>
}

Then run sudo systemctl restart apparmor.service