If the spatial filter is enabled for a survey with a query expression in Inbox Filter, records are omitted although they are within the map extent before Refresh is clicked.
Disable the spatial filter in Survey123 Connect for ArcGIS. When this is disabled, refreshing the map view does not cause the points to disappear if the points are within the extent.
Leave the spatial filter enabled, but pan to a different location so the missing point is in the center of the map view. Click Refresh. The points reappear.