fix #821

Author: inc2734

src/blocks/flex/block.json

@@ -72,10 +72,7 @@
 		"spacing": {
 			"margin": true,
 			"padding": true,
-			"blockGap": {
-				"sides": [ "horizontal", "vertical" ],
-				"__experimentalDefault": "0px"
-			},
+			"blockGap": true,
 			"__experimentalDefaultControls": {
 				"padding": true,
 				"blockGap": true

src/blocks/flex/index.php

@@ -24,18 +24,22 @@ function ( $block_content, $block, $instance ) {
 			: null;
 
 		if ( is_null( $gap_value ) ) {
-			$gap_value = isset( $block_type->supports['spacing']['blockGap']['__experimentalDefault'] )
-				? $block_type->supports['spacing']['blockGap']['__experimentalDefault']
-				: null;
+			return $block_content;
 		}
 
-		if ( is_null( $gap_value ) ) {
-			return $block_content;
+		// Dont support sides values.
+		if ( is_array( $gap_value ) ) {
+			if ( isset( $gap_value['top'] ) ) {
+				$gap_value = $gap_value['top'];
+			} else {
+				return $block_content;
+			}
 		}
 
-		$block_gap             = isset( $global_settings['spacing']['blockGap'] )
+		$block_gap = isset( $global_settings['spacing']['blockGap'] )
 			? $global_settings['spacing']['blockGap']
 			: null;
+
 		$has_block_gap_support = isset( $block_gap );
 		if ( ! $has_block_gap_support ) {
 			return $block_content;