Issues

• RelateOp fails to detect interior-interior intersection

  locationtech/jts#1237 · Filter by author strk opened on Sep 29, 2026

• isSimple() gives different results depending on the polygon's vertex order, due to a duplicate vertex where the ring touches itself

  locationtech/jts#1234 · Filter by author matthijsOpenWeb opened on Sep 21, 2026

• GeometrySnapper.snapToSelf can produce an incorrect polygonal result when multiple target vertices are within the snap tolerance

  locationtech/jts#1231 · Filter by author macg20 opened on Sep 7, 2026

• [Query / Chore] Clarify the ConstrainedDelaunayTriangulator docs

  locationtech/jts#1227 · Filter by author senft-research opened on Aug 27, 2026

• WKTWriter emits invalid dimensional EMPTY tokens for nested empty geometries

  locationtech/jts#1223 · Filter by author jiayuasu opened on Aug 12, 2026

• OverlayNG difference operation moves points in outer edge

  locationtech/jts#1222 · Filter by author ianturton opened on Aug 11, 2026
  5

• Respect Thread interruption in potentially long-running loops.

  locationtech/jts#1209 · Filter by author ajhoffma opened on Jun 18, 2026

• EPIC: SQL/MM Spatial (ISO/IEC 13249-3) Curve Awareness in JTS

  locationtech/jts#1195 · Filter by author grootstebozewolf opened on May 10, 2026
  25

• Android dex2oatd error

  locationtech/jts#1192 · Filter by author gszo123 opened on Apr 17, 2026

• ConformingDelaunayTriangulationBuilder poor triangulation for single-triangle input, possibly for any already-Delaunay set of constraints.

  jts-coretype-question
  locationtech/jts#1190 · Filter by author palisades-lakes opened on Apr 13, 2026
  13

• Negative buffer removes most of input geometry

  jts-coretype-bug
  locationtech/jts#1183 · Filter by author msbarry opened on Feb 18, 2026
  4

• LocationIndexedLine extractLine() producing unusual results

  locationtech/jts#1181 · Filter by author stephenh-enigma-interactive opened on Feb 13, 2026

• Buffer on simple Polygon producing invalid MultiPolygon

  locationtech/jts#1180 · Filter by author mukoki opened on Feb 13, 2026

• Quadtree query performance in multi-threaded environments due to synchronized items list

  locationtech/jts#1169 · Filter by author leeshinyook opened on Dec 17, 2025
  1

• ConcaveHull.concaveHullByLength can lead to infinite loops

  locationtech/jts#1153 · Filter by author lenalebt opened on Sep 22, 2025
  2

• The geometry's SRID unexpectedly resets to 0 (EPSG:0) after spatial operations like buffer.

  locationtech/jts#1152 · Filter by author zglmcr opened on Sep 20, 2025
  1

• MinumumAreaRectangle with convex hint is limited because all methods are private

  locationtech/jts#1149 · Filter by author joshgold22 opened on Sep 16, 2025
  1

• Unexpected output from OffsetCurve.getCurve() since jts-version 1.20.0

  type-question
  locationtech/jts#1147 · Filter by author Grimnir42 opened on Sep 3, 2025
  2

• Specific Small buffer of a polygon returns an empty geometry

  type-bug
  locationtech/jts#1143 · Filter by author Tygron opened on Aug 25, 2025
  1

• Summary of Issues for Delaunay Triangulation

  jts-coretype-bug
  locationtech/jts#1138 · Filter by author dr-jts opened on Jul 16, 2025

• snapRoundingNoder on polygons result in MultiLineString

  type-question
  locationtech/jts#1133 · Filter by author mortewle opened on May 27, 2025
  1

• DouglasPeuckerLineSimplifier.simplifySection() recursive calls cause StackOverflowError

  jts-coretype-bug
  locationtech/jts#1127 · Filter by author garneke opened on May 1, 2025
  3

• CoverageValidator does not detect gap if tolerance is too large

  jts-coretype-bug
  locationtech/jts#1122 · Filter by author dr-jts opened on Mar 3, 2025

• Add Collection Type Parameter Declarations for method return values?

  type-question
  locationtech/jts#1113 · Filter by author micycle1 opened on Jan 26, 2025
  7

• Summary: Point-Line Orientation robustness issues

  type-bug
  Bug

  locationtech/jts#1106 · Filter by author dr-jts opened on Jan 3, 2025