same problem 0n old 1997 lunar elecrolx freezer door which seems spring loaded to keep door shut and spring gone. yours may be too higher temprature setting and freezer door pushed open slightly so external ice outside door melting.
mine try to get new door or will super glue magnetic srips from old house fridge around top and sides of freezer box then galvanize paint thin steel strips to door see if that works.
greg, July 2016