Comparison method violates its general contract!

[pradeep082016]

Fatal Exception: java.lang.IllegalArgumentException: Comparison method violates its general contract!
at java.util.TimSort.mergeHi(TimSort.java:882)
at java.util.TimSort.mergeAt(TimSort.java:499)
at java.util.TimSort.mergeCollapse(TimSort.java:424)
at java.util.TimSort.sort(TimSort.java:210)
at java.util.TimSort.sort(TimSort.java:169)
at java.util.Arrays.sort(Arrays.java:2010)
at kotlin.collections.ArraysKt___ArraysKt.sortWith(_Arrays.kt:6685)
at kotlin.collections.CollectionsKt___CollectionsKt.sortedWith(_Collections.kt:882)
at br.com.insanitech.spritekit.SKNode$SKNodeDrawer.drawChildren$SpriteKitLib_release(SKNode.kt:293)
at br.com.insanitech.spritekit.SKNode$SKNodeDrawer.drawFrame(SKNode.kt:278)
at br.com.insanitech.spritekit.engine.SKEngine.doRendering(SKEngine.kt:63)
at br.com.insanitech.spritekit.engine.SKEngine.drawFrame(SKEngine.kt:70)
at br.com.insanitech.spritekit.opengl.renderer.GLRenderer.onDrawFrame(GLRenderer.kt:39)
at br.com.insanitech.spritekit.opengl.renderer.GLGenericRenderer.onDrawFrame(GLGenericRenderer.kt:24)
at android.opengl.GLSurfaceView$GLThread.guardedRun(GLSurfaceView.java:1535)
at android.opengl.GLSurfaceView$GLThread.run(GLSurfaceView.java:1240)