Raspberry Pi 4 (with emteria.OS v11.2.0) shuts down if no display connected
I have 2 devices connected to a display over HDMI. 1 device is a Raspberry Pi 4 (with emteria.OS v11.2.0) and the other one is my workstation. I use a HDMI switch to toggle between these 2 devices. When I toggle to my workstation and after a few seconds back to the Raspberry Pi, then the screen is black and shortly after I see the Emteria splash screen. It turns out that the Raspberry Pi shuts-down as soon as it detects that the HDMI monitor is gone.
Q: Is there a way to prevent this shut-down?
FYI, the Raspberry Pi 4 is constantly powered over the USB-C port by a 5V/2.1A power supply.