Using OsmAnd+ on Android 12.
Bizarre rendering of features near sea level.  Areas seemingly flooded (though obviously not actually).  Problem is visible on this side of the river from this location to about a mile upriver and at another location about 1.6mi downriver.
It is an issue which randomly occurs periodically at various locations.
Can someone:-
i) Rectify the problem here?
ii) Explain the cause?
iii) Explain how it is rectified?
Thanks.
PW