Each time a terminal output is supposed to be shown I get a black screen (sometimes the currently shown content freezes) or a TV reports missing input. This makes interacting with petitboot nearly impossible (it still reacts on key presses but you have to “guess” the menu structure).
An easy way to reproduce is by ssh-ing into a box and running systemctl stop kodi. The screen goes black and the only way to get it working again is by running systemctl start kodi.
The setup is: N2+ → Soundbar → Sony Bravia TV (all HDMI). Kodi is 20.2-Nexus.