CEC stops working when switching source (RPi4)

Hi,

I am running LibreELEC version 9.2.3 on a Raspberry Pi 4, connected to a Samsung Smart TV (HDMI1).

Generally CEC works fine.

If I switch to another source, such as the Spotify app, and then switch back to the Pi (HDMI1), CEC doesn't work. If I then turn the TV off and back on, it works again.

I went over the CEC settings and couldn't find anything that makes a difference.

Is this a known issue? Any known ways to solve or debug this?

Thanks.