I'm having real problems with MultiPolygons which I think I have reproduced in the tests (branch PR is here: #3)
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
MULTIPOLYGON(((153.160525 -27.377412,153.109678 -27.438948,153.049781 -27.440183,153.049071 -27.474133,153.036853 -27.462407,153.030055 -27.479401,153.003576 -27.474761,152.994671 -27.48996,153.020615 -27.500563,153.000384 -27.506686,153.008376 -27.520987,152.970607 -27.504557,152.973545 -27.542577,152.938563 -27.525358,152.903432 -27.544263,152.8994 -27.602143,152.874073 -27.57857,152.85728 -27.59656,152.848044 -27.532162,152.831633 -27.533082,152.841338 -27.54471,152.820684 -27.555931,152.741386 -27.566009,152.747844 -27.526336,152.762703 -27.521827,152.730042 -27.494873,152.747402 -27.440865,152.736847 -27.373346,152.707818 -27.351805,152.679693 -27.372265,152.690832 -27.343576,152.748767 -27.318645,152.772084 -27.343989,152.759997 -27.363934,152.775463 -27.401656,152.812496 -27.401315,152.849449 -27.421704,152.897229 -27.41728,152.917034 -27.394182,152.948784 -27.408821,152.976962 -27.400824,152.997241 -27.3021,153.068569 -27.276796,153.082602 -27.333821,153.155628 -27.362939,153.160525 -27.377412)),((153.095813 -27.256922,153.077349 -27.262509,153.075715 -27.227985,153.045501 -27.228178,153.031867 -27.207337,153.047705 -27.194069,153.091377 -27.20613,153.114483 -27.19124,153.117923 -27.233565,153.107842 -27.261695,153.095813 -27.256922)))
But testing this seems to cause seg faults.
Happy to help with debugging this but don't really know where to start.