Colors bars not working

Hi everyone,
Since few months the colors bars button on the control camera panel isn't working anymore. Do you have the same problem or any solution? I already tried on different camera, different control panel and also switchers/update...
Thanks for any answer!
Since few months the colors bars button on the control camera panel isn't working anymore. Do you have the same problem or any solution? I already tried on different camera, different control panel and also switchers/update...
Thanks for any answer!