title: zero and backspace not working in virtualbox kubuntu VM
body: <p>My backspace and zero keys are misbehaving but only in my kubuntu 22.04 vbox VM.</p>
  <ul>
  <li>they work fine on my main machine</li>
  <li>they work fine on my Windows 10 VM</li>
  </ul>
  <p>On the kubuntu VM</p>
  <ul>
  <li>SH-zero gives me a proper bracket.</li>
  <li>backspace is dead in all windows</li>
  <li>^BS deletes single characters in konsole and gvim</li>
  <li>^BS deletes ALL characters in Chrome &amp; system settings Search box</li>
  </ul>
  <p>Everything else is working fine. Oddest problem I've seen in a quite a while.</p>
  <p>Next steps: I turned on a number of funky desktop configuration features in the last day or so. I'll try turning some off or starting from a clean install.</p>