diff --git a/modules/extensions/src/brushing/brushing.ts b/modules/extensions/src/brushing/brushing.ts
index e429cbc2345..2e8ce384527 100644
--- a/modules/extensions/src/brushing/brushing.ts
+++ b/modules/extensions/src/brushing/brushing.ts
@@ -70,11 +70,6 @@ export default class BrushingExtension extends LayerExtension {
         brushingTargets: {
           size: 2,
           accessor: 'getBrushingTarget',
-          // Hack: extension's defaultProps is not merged with the layer's defaultProps,
-          // So we can't use the standard accessor when the prop is undefined
-          // TODO - move to an option
-          // eslint-disable-next-line @typescript-eslint/unbound-method
-          update: this.props.getBrushingTarget ? undefined : extension.useConstantTargetPositions,
           shaderAttributes: {
             brushingTargets: {
               divisor: 0
@@ -111,10 +106,4 @@ export default class BrushingExtension extends LayerExtension {
       });
     }
   }
-
-  useConstantTargetPositions(attribute) {
-    attribute.constant = true;
-    attribute.value = new Float32Array(2);
-    return;
-  }
 }
diff --git a/modules/extensions/src/clip/clip.ts b/modules/extensions/src/clip/clip.ts
index a06823f2a0e..3106341f1da 100644
--- a/modules/extensions/src/clip/clip.ts
+++ b/modules/extensions/src/clip/clip.ts
@@ -125,8 +125,8 @@ export default class ClipExtension extends LayerExtension {
   }
 
   /* eslint-disable camelcase */
-  draw(this: Layer<ClipExtensionProps>, {uniforms}: any): void {
-    const {clipBounds = defaultProps.clipBounds} = this.props;
+  draw(this: Layer<Required<ClipExtensionProps>>, {uniforms}: any): void {
+    const {clipBounds} = this.props;
     if (this.state.clipByInstance) {
       uniforms.clip_bounds = clipBounds;
     } else {
diff --git a/modules/extensions/src/mask/mask.ts b/modules/extensions/src/mask/mask.ts
index 4b93f3ae3b9..efe86376833 100644
--- a/modules/extensions/src/mask/mask.ts
+++ b/modules/extensions/src/mask/mask.ts
@@ -51,9 +51,9 @@ export default class MaskExtension extends LayerExtension {
   }
 
   /* eslint-disable camelcase */
-  draw(this: Layer<MaskExtensionProps>, {uniforms, context, moduleParameters}: any) {
+  draw(this: Layer<Required<MaskExtensionProps>>, {uniforms, context, moduleParameters}: any) {
     uniforms.mask_maskByInstance = this.state.maskByInstance;
-    const {maskId = '', maskInverted = false} = this.props;
+    const {maskId, maskInverted} = this.props;
     const {maskChannels} = moduleParameters;
     const {viewport} = context;
     if (maskChannels && maskChannels[maskId]) {