Did you read the first post Pugs? He listed exactly what the toast messages say.
I'm having this same issue on Note 20 ultra
My A52 shows toast notifications for every tiny action I take on Google, WA etc. It stays on screen forever and blocks my keyboard with a black strip on which message appears. e.g. if I sent a reply in WA it will show "sending reply" and stay there forever not allowing me to type further.
I am tired of finding a way out can anyone help me please