diff --git a/src/animation/AnimationAction.js b/src/animation/AnimationAction.js
index 62ded0f4fe8dcd..a1a8c3c1bb39bf 100644
--- a/src/animation/AnimationAction.js
+++ b/src/animation/AnimationAction.js
@@ -79,7 +79,7 @@ class AnimationAction {
 		 * loop state).
 		 *
 		 * @type {number}
-		 * @default Infinity
+		 * @default 0
 		 */
 		this.time = 0;
 
diff --git a/src/core/Clock.js b/src/core/Clock.js
index ee1a528b07b1d1..0a54131792708c 100644
--- a/src/core/Clock.js
+++ b/src/core/Clock.js
@@ -54,7 +54,7 @@ class Clock {
 		 * Whether the clock is running or not.
 		 *
 		 * @type {boolean}
-		 * @default true
+		 * @default false
 		 */
 		this.running = false;
 
diff --git a/src/extras/core/ShapePath.js b/src/extras/core/ShapePath.js
index ddc0ec5a37522f..dc016818114d33 100644
--- a/src/extras/core/ShapePath.js
+++ b/src/extras/core/ShapePath.js
@@ -30,7 +30,7 @@ class ShapePath {
 		 * The paths that have been generated for this shape.
 		 *
 		 * @type {Array<Path>}
-		 * @default null
+		 * @default []
 		 */
 		this.subPaths = [];
 
diff --git a/src/materials/MeshDepthMaterial.js b/src/materials/MeshDepthMaterial.js
index abfa8f2d7e082f..cd89eb5d8c4426 100644
--- a/src/materials/MeshDepthMaterial.js
+++ b/src/materials/MeshDepthMaterial.js
@@ -95,7 +95,7 @@ class MeshDepthMaterial extends Material {
 		 * map set, this value is not applied.
 		 *
 		 * @type {number}
-		 * @default 0
+		 * @default 1
 		 */
 		this.displacementScale = 1;
 
diff --git a/src/materials/MeshDistanceMaterial.js b/src/materials/MeshDistanceMaterial.js
index 142ed98a2e7269..0169d542777492 100644
--- a/src/materials/MeshDistanceMaterial.js
+++ b/src/materials/MeshDistanceMaterial.js
@@ -90,7 +90,7 @@ class MeshDistanceMaterial extends Material {
 		 * map set, this value is not applied.
 		 *
 		 * @type {number}
-		 * @default 0
+		 * @default 1
 		 */
 		this.displacementScale = 1;
 
diff --git a/src/materials/MeshLambertMaterial.js b/src/materials/MeshLambertMaterial.js
index a27f5065c25503..e3dd0f0871a55a 100644
--- a/src/materials/MeshLambertMaterial.js
+++ b/src/materials/MeshLambertMaterial.js
@@ -221,7 +221,7 @@ class MeshLambertMaterial extends Material {
 		 * map set, this value is not applied.
 		 *
 		 * @type {number}
-		 * @default 0
+		 * @default 1
 		 */
 		this.displacementScale = 1;
 
diff --git a/src/materials/MeshMatcapMaterial.js b/src/materials/MeshMatcapMaterial.js
index 9ca5ec3abe6ae8..f6f8e28e88770e 100644
--- a/src/materials/MeshMatcapMaterial.js
+++ b/src/materials/MeshMatcapMaterial.js
@@ -157,7 +157,7 @@ class MeshMatcapMaterial extends Material {
 		 * map set, this value is not applied.
 		 *
 		 * @type {number}
-		 * @default 0
+		 * @default 1
 		 */
 		this.displacementScale = 1;
 
diff --git a/src/materials/MeshNormalMaterial.js b/src/materials/MeshNormalMaterial.js
index bb3d650a91b5dd..37c9e36434f11e 100644
--- a/src/materials/MeshNormalMaterial.js
+++ b/src/materials/MeshNormalMaterial.js
@@ -109,7 +109,7 @@ class MeshNormalMaterial extends Material {
 		 * map set, this value is not applied.
 		 *
 		 * @type {number}
-		 * @default 0
+		 * @default 1
 		 */
 		this.displacementScale = 1;
 
diff --git a/src/materials/MeshPhongMaterial.js b/src/materials/MeshPhongMaterial.js
index 182488cdb125f8..431dc21f84c538 100644
--- a/src/materials/MeshPhongMaterial.js
+++ b/src/materials/MeshPhongMaterial.js
@@ -236,7 +236,7 @@ class MeshPhongMaterial extends Material {
 		 * map set, this value is not applied.
 		 *
 		 * @type {number}
-		 * @default 0
+		 * @default 1
 		 */
 		this.displacementScale = 1;
 
diff --git a/src/materials/MeshPhysicalMaterial.js b/src/materials/MeshPhysicalMaterial.js
index 661d91c50bdfa8..8b144719317885 100644
--- a/src/materials/MeshPhysicalMaterial.js
+++ b/src/materials/MeshPhysicalMaterial.js
@@ -72,7 +72,7 @@ class MeshPhysicalMaterial extends MeshStandardMaterial {
 		 * property provides additional rotation to the vectors in the texture.
 		 *
 		 * @type {number}
-		 * @default 1
+		 * @default 0
 		 */
 		this.anisotropyRotation = 0;
 
diff --git a/src/materials/MeshStandardMaterial.js b/src/materials/MeshStandardMaterial.js
index ab9b81c3d97912..903ec6981b669a 100644
--- a/src/materials/MeshStandardMaterial.js
+++ b/src/materials/MeshStandardMaterial.js
@@ -261,7 +261,7 @@ class MeshStandardMaterial extends Material {
 		 * map set, this value is not applied.
 		 *
 		 * @type {number}
-		 * @default 0
+		 * @default 1
 		 */
 		this.displacementScale = 1;
 
diff --git a/src/materials/MeshToonMaterial.js b/src/materials/MeshToonMaterial.js
index 7d3362852e299b..e8d298603e2c7b 100644
--- a/src/materials/MeshToonMaterial.js
+++ b/src/materials/MeshToonMaterial.js
@@ -224,7 +224,7 @@ class MeshToonMaterial extends Material {
 		 * map set, this value is not applied.
 		 *
 		 * @type {number}
-		 * @default 0
+		 * @default 1
 		 */
 		this.displacementScale = 1;
 
diff --git a/src/math/Triangle.js b/src/math/Triangle.js
index ec4c002557fdf6..9de28261b8f08d 100644
--- a/src/math/Triangle.js
+++ b/src/math/Triangle.js
@@ -473,7 +473,8 @@ class Triangle {
 		}
 
 		const vc = d1 * d4 - d3 * d2;
-		if ( vc <= 0 && d1 >= 0 && d3 <= 0 ) {
+
+		if ( vc <= 0 && d1 >= 0 && d3 <= 0 && d1 - d3 > 0 ) { // modification of the algorithm: d1 - d3 is the squared length of AB, so skip this region if a and b coincide
 
 			v = d1 / ( d1 - d3 );
 			// edge region of AB; barycentric coords (1-v, v, 0)
diff --git a/src/nodes/display/PassNode.js b/src/nodes/display/PassNode.js
index 93eac32fbfbb70..fb98df1497ef24 100644
--- a/src/nodes/display/PassNode.js
+++ b/src/nodes/display/PassNode.js
@@ -283,7 +283,7 @@ class PassNode extends Node {
 		 * Whether the pass is transparent.
 		 *
 		 * @type {boolean}
-		 * @default false
+		 * @default true
 		 */
 		this.transparent = true;
 
diff --git a/src/nodes/lighting/ShadowNode.js b/src/nodes/lighting/ShadowNode.js
index f05b2be407c736..9cb051f00d81e7 100644
--- a/src/nodes/lighting/ShadowNode.js
+++ b/src/nodes/lighting/ShadowNode.js
@@ -239,7 +239,7 @@ class ShadowNode extends ShadowBaseNode {
 		 *
 		 * @type {number}
 		 * @readonly
-		 * @default true
+		 * @default 0
 		 */
 		this.depthLayer = 0;
 
diff --git a/src/objects/BatchedMesh.js b/src/objects/BatchedMesh.js
index 1bfc912883adc7..8428f1caf4c4c7 100644
--- a/src/objects/BatchedMesh.js
+++ b/src/objects/BatchedMesh.js
@@ -498,7 +498,7 @@ class BatchedMesh extends Mesh {
 	/**
 	 * Computes the bounding box, updating {@link BatchedMesh#boundingBox}.
 	 * Bounding boxes aren't computed by default. They need to be explicitly computed,
-	 * otherwise they are `null`.
+	 * otherwise they are `null`. Must be recomputed when instances change.
 	 */
 	computeBoundingBox() {
 
@@ -527,8 +527,8 @@ class BatchedMesh extends Mesh {
 
 	/**
 	 * Computes the bounding sphere, updating {@link BatchedMesh#boundingSphere}.
-	 * Bounding spheres aren't computed by default. They need to be explicitly computed,
-	 * otherwise they are `null`.
+	 * The engine computes the bounding sphere once when it is needed. Must be
+	 * recomputed when instances change.
 	 */
 	computeBoundingSphere() {
 
diff --git a/test/unit/src/math/Triangle.tests.js b/test/unit/src/math/Triangle.tests.js
index 3b81d7258d287a..90e2a3876cb21d 100644
--- a/test/unit/src/math/Triangle.tests.js
+++ b/test/unit/src/math/Triangle.tests.js
@@ -281,6 +281,11 @@ export default QUnit.module( 'Maths', () => {
 			a.closestPointToPoint( new Vector3( 0, - 2, 0 ), point );
 			assert.ok( point.equals( new Vector3( 0, 0, 0 ) ), 'Passed!' );
 
+			// degenerate triangle where a and b coincide
+			a.set( zero3, zero3, new Vector3( 2, 0, 0 ) );
+			a.closestPointToPoint( new Vector3( 1, 1, 0 ), point );
+			assert.ok( point.equals( new Vector3( 1, 0, 0 ) ), 'Passed!' );
+
 		} );
 
 		QUnit.test( 'isFrontFacing', ( assert ) => {