Android Accessibility service auto disable


Upgraded Moto phone from Nougot 7 to Oreo 8.1 and since then, a couple of apps’ Accessibility service is turned off automatically (from on to off). Searched and found recommendation to stop apps’ battery optimization (yes to no) but that didn’t solve the problem. Searched here also but didn’t find this addressed. Don’t recall this being an issue in Nougot. Is this a known Oreo bug? Thanks.