@ ColdPhase17
i just tried uncheck the "enable quic/http3" only in avast then after that i delete the chrome folder in registry policy, and reboot my pc , open chrome browser again
to check if the browser is getting "manage by organization" , yes it still did...and its still there,you can still get rid off this message in chrome if you:
1.disable webshield in avast and the policy will gone in chrome://policy (but you will be unprotected browsing the web)
or
2.disabled it by going to chrome://flags and disabled "Show managed UI for managed users". (note this will only get rid the notification "notice by organization" but it doesnt get rid the policy set by avast) the policy is still there but only the notification will gone in your chrome browser.
i suggest you have to live with it now... Since its an avast thing now triggering this policy in chrome and they explain this to us im fine with it i leave my browser and Avast the way it is for now...
if your browser is acting weird you can still check it on chrome://policy and see what running behind highjacking your browser that triggers manage by org