BoxControl: Fix critical error when null value is passed (#65287)

* BoxControl: Fix critical error when null value is passed * Add Changelog entry * Update packages/components/src/box-control/utils.ts Co-authored-by: Marin Atanasov <[email protected]> --------- Co-authored-by: t-hamano <[email protected]> Co-authored-by: tyxla <[email protected]>
WordPress · Sep 12, 2024 · 6d32f4f · 6d32f4f
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diff --git a/packages/components/CHANGELOG.md b/packages/components/CHANGELOG.md
@@ -29,6 +29,7 @@
 -   `Tabs`: improved performance of the indicator animation ([#64926](https://github.com/WordPress/gutenberg/pull/64926)).
 -   `Composite`: Remove from private APIs ([#63569](https://github.com/WordPress/gutenberg/pull/63569)).
 -   use local copy of `use-lilius` instead of `npm` dependency ([#65097](https://github.com/WordPress/gutenberg/pull/65097)).
+-   `BoxControl`: Fix critical error when null value is passed ([#65287](https://github.com/WordPress/gutenberg/pull/65287)).
 
 ## 28.7.0 (2024-09-05)
 

diff --git a/packages/components/src/box-control/utils.ts b/packages/components/src/box-control/utils.ts
@@ -179,7 +179,7 @@ export function isValuesMixed(
  */
 export function isValuesDefined( values?: BoxControlValue ) {
 	return (
-		values !== undefined &&
+		values &&
 		Object.values( values ).filter(
 			// Switching units when input is empty causes values only
 			// containing units. This gives false positive on mixed values