Only capture toolbars on parent Nav block when not in vertical mode (#…

…34615)

* Only capture toolbars on parent Nav block when not in vertical mode

* Add code comment for context and clarity about reason for change

packages/block-library/src/navigation/edit.js

@@ -158,7 +158,11 @@ function Navigation( {
 				isSelected
 					? InnerBlocks.DefaultAppender
 					: false,
-			__experimentalCaptureToolbars: true,
+			// Ensure block toolbar is not too far removed from item
+			// being edited when in vertical mode.
+			// see: https://github.com/WordPress/gutenberg/pull/34615.
+			__experimentalCaptureToolbars:
+				attributes.orientation !== 'vertical',
 			// Template lock set to false here so that the Nav
 			// Block on the experimental menus screen does not
 			// inherit templateLock={ 'all' }.