Problem with HDMI CEC on a new TCL TV

[Asxetos]

A little help guys, i face a weird problem with HDMI CEC on a new TCL TV in the bedroom.

The TV Box is a Tanix SX3 (S905x3 2gb ram) running CoreELEC 20.2 and so far, CEC was working fine with an ancient 32" LG tv, but i had to upgrade cause it’s screen was slowly giving up.
Yesterday i bought a TCL 32S5400AF 32’’ FHD SMART tv with ANDROID 11 and i face this:

The box is connected and seen OK by the TV but CEC is not working as it should.

CEC is working OK only if i enable this weird on scren remote on the TV (by pressing the “Menus” option):

Then, remote commands are passed to the box, for as long as this on scren remote is enabled (and visible).
So the facts are:
The box and the HDMI cable are working OK.
The TV can see the box, but it does not control it without this weird on scren remote.
This must be a TV (software) problem, not a CoreELEC or TV-Box problem.

Any clues how to remedy this?

PS. Sorry if this is not the right forum category…

[frodo19]

Yeah, this overlay come in the older tcl firmwares. I have c825, and the newer version of the firmwares works fine without this annoying overlay.
So the issue on TCL side.

[Asxetos]

Thanks frodo19
I’ll start looking around for an updated version.

[frodo19]

When Update possible, you can find at TCL atv Telegram group