I have just upgraded from an S9 to an S20. I always keep the notification for Messenger switched off to prevent the 'bubble' appearing on screen when a message arrives. On the S20 it still appears, even when switched off in app settings. Tried uninstalling app then reinstall but still the same.
HI user, I did some digging and ive played around with the app and you can dissable that feature in the app, that appears to be the only way. I recommend restting your phone settings and try turning off the feature again on the app. Settings > General management > Reset > Reset
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