src/util/qpolygon-utils.js

@@ -303,7 +303,13 @@ export function removeDuplicatePolygons(polygons) {
     }
   })
 
-  return uniquePolygons
+  // x가 전부 같거나, y가 전부 같은 경우 제거
+  return uniquePolygons.filter((polygon) => {
+    const xValues = polygon.map((point) => point.x)
+    const yValues = polygon.map((point) => point.y)
+
+    return !(xValues.every((x) => x === xValues[0]) || yValues.every((y) => y === yValues[0]))
+  })
 }
 
 export const isSamePoint = (a, b) => {