OffsetCurve produces MultiLineString with 2 contiguous lines

[dr-jts]

In GEOS an offset curve of this geometry produces a MultiLineString with two contiguous lines. In JTS this correctly produces a LineString, with the same coordinates.

bin/geosop -a "LINESTRING (0.39 -0.02, 0.4650008997915482 -0.02, 0.4667128891457749 -0.0202500016082272, 0.4683515425280024 -0.0210000000000019, 0.4699159706879993 -0.0222499999999996, 0.4714061701120011 -0.0240000000000018, 0.4929087886040002 -0.0535958153351002, 0.4968358395870001 -0.0507426457862002, 0.4774061701119963 -0.0239999999999952, 0.476353470688 -0.0222500000000011, 0.4761015425280001 -0.0210000000000007, 0.4766503813740676 -0.0202500058185111, 0.4779990890331232 -0.02, 0.6189999999999996 -0.02, 0.619 -0.0700000000000002, 0.634 -0.0700000000000002, 0.6339999999999998 -0.02, 0.65 -0.02)" offsetCurve N-.002

Originally reported as PostGIS 3279.