Wrong multipolygons rendering

[sikmir]

Actual behaviour

test_1.osm

<?xml version="1.0" encoding="UTF-8"?>
<osm version="0.6">
 <bounds minlat="60.09" minlon="29.66" maxlat="60.16" maxlon="29.75"/>
 <node id="1" version="1" lat="60.141334" lon="29.743080"/>
 <node id="2" version="1" lat="60.155005" lon="29.704971"/>
 <node id="3" version="1" lat="60.142188" lon="29.667892"/>
 <node id="4" version="1" lat="60.107644" lon="29.666519"/>
 <node id="5" version="1" lat="60.098232" lon="29.707718"/>
 <node id="6" version="1" lat="60.111579" lon="29.745483"/>
 <node id="7" version="1" lat="60.111579" lon="29.694328"/>
 <node id="8" version="1" lat="60.125263" lon="29.694328"/>
 <node id="9" version="1" lat="60.133812" lon="29.744453"/>
 <way id="10" version="1">
  <nd ref="1"/>
  <nd ref="2"/>
  <nd ref="3"/>
  <nd ref="4"/>
  <nd ref="5"/>
  <nd ref="6"/>
 </way>
 <way id="11" version="1">
  <nd ref="6"/>
  <nd ref="7"/>
 </way>
 <way id="12" version="1">
  <nd ref="7"/>
  <nd ref="8"/>
 </way>
 <way id="13" version="1">
  <nd ref="8"/>
  <nd ref="9"/>
 </way>
 <way id="14" version="1">
  <nd ref="9"/>
  <nd ref="1"/>
 </way>
 <relation id="9" version="1">
  <member type="way" ref="10" role="outer"/>
  <member type="way" ref="11" role="outer"/>
  <member type="way" ref="12" role="outer"/>
  <member type="way" ref="13" role="outer"/>
  <member type="way" ref="14" role="outer"/>
  <tag k="type" v="multipolygon"/>
  <tag k="natural" v="water"/>
 </relation>
</osm>

Result (wrong):

test_2.osm

<?xml version="1.0" encoding="UTF-8"?>
<osm version="0.6">
 <bounds minlat="60.09" minlon="29.66" maxlat="60.16" maxlon="29.75"/>
 <node id="1" version="1" lat="60.141334" lon="29.743080"/>
 <node id="2" version="1" lat="60.155005" lon="29.704971"/>
 <node id="3" version="1" lat="60.142188" lon="29.667892"/>
 <node id="4" version="1" lat="60.107644" lon="29.666519"/>
 <node id="5" version="1" lat="60.098232" lon="29.707718"/>
 <node id="6" version="1" lat="60.111579" lon="29.745483"/>
 <node id="7" version="1" lat="60.111579" lon="29.694328"/>
 <node id="8" version="1" lat="60.125263" lon="29.694328"/>
 <node id="9" version="1" lat="60.133812" lon="29.744453"/>
 <way id="10" version="1">
  <nd ref="1"/>
  <nd ref="2"/>
  <nd ref="3"/>
  <nd ref="4"/>
  <nd ref="5"/>
  <nd ref="6"/>
 </way>
 <way id="11" version="1">
  <nd ref="6"/>
  <nd ref="7"/>
  <nd ref="8"/>
 </way>
 <way id="12" version="1">
  <nd ref="8"/>
  <nd ref="9"/>
 </way>
 <way id="13" version="1">
  <nd ref="9"/>
  <nd ref="1"/>
 </way>
 <relation id="9" version="1">
  <member type="way" ref="10" role="outer"/>
  <member type="way" ref="11" role="outer"/>
  <member type="way" ref="12" role="outer"/>
  <member type="way" ref="13" role="outer"/>
  <tag k="type" v="multipolygon"/>
  <tag k="natural" v="water"/>
 </relation>
</osm>

Result (wrong):

test_3.osm

<?xml version="1.0" encoding="UTF-8"?>
<osm version="0.6">
 <bounds minlat="60.09" minlon="29.66" maxlat="60.16" maxlon="29.75"/>
 <node id="1" version="1" lat="60.141334" lon="29.743080"/>
 <node id="2" version="1" lat="60.155005" lon="29.704971"/>
 <node id="3" version="1" lat="60.142188" lon="29.667892"/>
 <node id="4" version="1" lat="60.107644" lon="29.666519"/>
 <node id="5" version="1" lat="60.098232" lon="29.707718"/>
 <node id="6" version="1" lat="60.111579" lon="29.745483"/>
 <node id="7" version="1" lat="60.111579" lon="29.694328"/>
 <node id="8" version="1" lat="60.125263" lon="29.694328"/>
 <node id="9" version="1" lat="60.133812" lon="29.744453"/>
 <way id="10" version="1">
  <nd ref="1"/>
  <nd ref="2"/>
  <nd ref="3"/>
  <nd ref="4"/>
  <nd ref="5"/>
  <nd ref="6"/>
 </way>
 <way id="11" version="1">
  <nd ref="6"/>
  <nd ref="7"/>
  <nd ref="8"/>
 </way>
 <way id="12" version="1">
  <nd ref="8"/>
  <nd ref="9"/>
  <nd ref="1"/>
 </way>
 <relation id="9" version="1">
  <member type="way" ref="10" role="outer"/>
  <member type="way" ref="11" role="outer"/>
  <member type="way" ref="12" role="outer"/>
  <tag k="type" v="multipolygon"/>
  <tag k="natural" v="water"/>
 </relation>
</osm>

Result (wrong):

test_4.osm

<?xml version="1.0" encoding="UTF-8"?>
<osm version="0.6">
 <bounds minlat="60.09" minlon="29.66" maxlat="60.16" maxlon="29.75"/>
 <node id="1" version="1" lat="60.141334" lon="29.743080"/>
 <node id="2" version="1" lat="60.155005" lon="29.704971"/>
 <node id="3" version="1" lat="60.142188" lon="29.667892"/>
 <node id="4" version="1" lat="60.107644" lon="29.666519"/>
 <node id="5" version="1" lat="60.098232" lon="29.707718"/>
 <node id="6" version="1" lat="60.111579" lon="29.745483"/>
 <node id="7" version="1" lat="60.111579" lon="29.694328"/>
 <node id="8" version="1" lat="60.125263" lon="29.694328"/>
 <node id="9" version="1" lat="60.133812" lon="29.744453"/>
 <way id="10" version="1">
  <nd ref="1"/>
  <nd ref="2"/>
  <nd ref="3"/>
  <nd ref="4"/>
  <nd ref="5"/>
  <nd ref="6"/>
 </way>
 <way id="11" version="1">
  <nd ref="6"/>
  <nd ref="7"/>
  <nd ref="8"/>
  <nd ref="9"/>
  <nd ref="1"/>
 </way>
 <relation id="9" version="1">
  <member type="way" ref="10" role="outer"/>
  <member type="way" ref="11" role="outer"/>
  <tag k="type" v="multipolygon"/>
  <tag k="natural" v="water"/>
 </relation>
</osm>

Result (OK):

Expected behaviour

All test_{1,2,3,4}.osm should be rendered the same way.
Just for reference, JOSM rendering:

Test files

test_osm.tar.gz