Index: src/js/_enqueues/lib/image-edit.js
===================================================================
--- src/js/_enqueues/lib/image-edit.js	(revision 48262)
+++ src/js/_enqueues/lib/image-edit.js	(working copy)
@@ -136,6 +136,8 @@
 				return false;
 			}
 		});
+
+		$( document ).on( 'image-editor-image-loaded', this.focusManager );
 	},
 
 	/**
@@ -621,11 +623,29 @@
 		this.setCropSelection( postid, { 'x1': 0, 'y1': 0, 'x2': 0, 'y2': 0, 'width': img.innerWidth(), 'height': img.innerHeight() } );
 
 		this.toggleEditor(postid, 0);
-		// Editor is ready, move focus to the first focusable element.
-		$( '.imgedit-wrap .imgedit-help-toggle' ).eq( 0 ).focus();
+
+		$( document ).trigger( 'image-editor-image-loaded' );
 	},
 
 	/**
+	 * Manages keyboard focus in the Image Editor user interface.
+	 *
+	 * @since 5.5.0
+	 *
+	 * @return {void}
+	 */
+	focusManager: function() {
+		/*
+		 * Editor is ready, move focus to the first focusable element. Since the
+		 * DOM update is pretty large, the timeout helps browsers update their
+		 * accessibility tree to better support assistive technologies.
+		 */
+		setTimeout( function() {
+			$( '.imgedit-wrap' ).find( ':tabbable:first' ).focus();
+		}, 100 );
+	},
+
+	/**
 	 * Initializes the cropping tool.
 	 *
 	 * @since 2.9.0
Index: src/wp-admin/css/media.css
===================================================================
--- src/wp-admin/css/media.css	(revision 48262)
+++ src/wp-admin/css/media.css	(working copy)
@@ -1224,6 +1224,7 @@
 		float: none;
 		width: auto;
 		max-width: none;
+		padding-bottom: 16px;
 	}
 
 	.copy-to-clipboard-container .success {
Index: src/wp-admin/includes/image-edit.php
===================================================================
--- src/wp-admin/includes/image-edit.php	(revision 48262)
+++ src/wp-admin/includes/image-edit.php	(working copy)
@@ -48,6 +48,57 @@
 	<div class="imgedit-wrap wp-clearfix">
 	<div id="imgedit-panel-<?php echo $post_id; ?>">
 
+	<div class="imgedit-panel-content wp-clearfix">
+		<?php echo $note; ?>
+		<div class="imgedit-menu wp-clearfix">
+			<button type="button" onclick="imageEdit.handleCropToolClick( <?php echo "$post_id, '$nonce'"; ?>, this )" class="imgedit-crop button disabled" disabled><?php esc_html_e( 'Crop' ); ?></button>
+			<?php
+
+			// On some setups GD library does not provide imagerotate() - Ticket #11536.
+			if ( wp_image_editor_supports(
+				array(
+					'mime_type' => get_post_mime_type( $post_id ),
+					'methods'   => array( 'rotate' ),
+				)
+			) ) {
+				$note_no_rotate = '';
+				?>
+				<button type="button" class="imgedit-rleft button" onclick="imageEdit.rotate( 90, <?php echo "$post_id, '$nonce'"; ?>, this)"><?php esc_html_e( 'Rotate left' ); ?></button>
+				<button type="button" class="imgedit-rright button" onclick="imageEdit.rotate(-90, <?php echo "$post_id, '$nonce'"; ?>, this)"><?php esc_html_e( 'Rotate right' ); ?></button>
+				<?php
+			} else {
+				$note_no_rotate = '<p class="note-no-rotate"><em>' . __( 'Image rotation is not supported by your web host.' ) . '</em></p>';
+				?>
+				<button type="button" class="imgedit-rleft button disabled" disabled></button>
+				<button type="button" class="imgedit-rright button disabled" disabled></button>
+			<?php } ?>
+
+			<button type="button" onclick="imageEdit.flip(1, <?php echo "$post_id, '$nonce'"; ?>, this)" class="imgedit-flipv button"><?php esc_html_e( 'Flip vertical' ); ?></button>
+			<button type="button" onclick="imageEdit.flip(2, <?php echo "$post_id, '$nonce'"; ?>, this)" class="imgedit-fliph button"><?php esc_html_e( 'Flip horizontal' ); ?></button>
+
+			<br class="imgedit-undo-redo-separator" />
+			<button type="button" id="image-undo-<?php echo $post_id; ?>" onclick="imageEdit.undo(<?php echo "$post_id, '$nonce'"; ?>, this)" class="imgedit-undo button disabled" disabled><?php esc_html_e( 'Undo' ); ?></button>
+			<button type="button" id="image-redo-<?php echo $post_id; ?>" onclick="imageEdit.redo(<?php echo "$post_id, '$nonce'"; ?>, this)" class="imgedit-redo button disabled" disabled><?php esc_html_e( 'Redo' ); ?></button>
+			<?php echo $note_no_rotate; ?>
+		</div>
+
+		<input type="hidden" id="imgedit-sizer-<?php echo $post_id; ?>" value="<?php echo $sizer; ?>" />
+		<input type="hidden" id="imgedit-history-<?php echo $post_id; ?>" value="" />
+		<input type="hidden" id="imgedit-undone-<?php echo $post_id; ?>" value="0" />
+		<input type="hidden" id="imgedit-selection-<?php echo $post_id; ?>" value="" />
+		<input type="hidden" id="imgedit-x-<?php echo $post_id; ?>" value="<?php echo isset( $meta['width'] ) ? $meta['width'] : 0; ?>" />
+		<input type="hidden" id="imgedit-y-<?php echo $post_id; ?>" value="<?php echo isset( $meta['height'] ) ? $meta['height'] : 0; ?>" />
+
+		<div id="imgedit-crop-<?php echo $post_id; ?>" class="imgedit-crop-wrap">
+		<img id="image-preview-<?php echo $post_id; ?>" onload="imageEdit.imgLoaded('<?php echo $post_id; ?>')" src="<?php echo admin_url( 'admin-ajax.php', 'relative' ); ?>?action=imgedit-preview&amp;_ajax_nonce=<?php echo $nonce; ?>&amp;postid=<?php echo $post_id; ?>&amp;rand=<?php echo rand( 1, 99999 ); ?>" alt="" />
+		</div>
+
+		<div class="imgedit-submit">
+			<input type="button" onclick="imageEdit.close(<?php echo $post_id; ?>, 1)" class="button imgedit-cancel-btn" value="<?php esc_attr_e( 'Cancel' ); ?>" />
+			<input type="button" onclick="imageEdit.save(<?php echo "$post_id, '$nonce'"; ?>)" disabled="disabled" class="button button-primary imgedit-submit-btn" value="<?php esc_attr_e( 'Save' ); ?>" />
+		</div>
+	</div>
+
 	<div class="imgedit-settings">
 	<div class="imgedit-group">
 	<div class="imgedit-group-top">
@@ -195,58 +246,7 @@
 
 	</div>
 
-	<div class="imgedit-panel-content wp-clearfix">
-		<?php echo $note; ?>
-		<div class="imgedit-menu wp-clearfix">
-			<button type="button" onclick="imageEdit.handleCropToolClick( <?php echo "$post_id, '$nonce'"; ?>, this )" class="imgedit-crop button disabled" disabled><?php esc_html_e( 'Crop' ); ?></button>
-			<?php
-
-			// On some setups GD library does not provide imagerotate() - Ticket #11536.
-			if ( wp_image_editor_supports(
-				array(
-					'mime_type' => get_post_mime_type( $post_id ),
-					'methods'   => array( 'rotate' ),
-				)
-			) ) {
-				$note_no_rotate = '';
-				?>
-				<button type="button" class="imgedit-rleft button" onclick="imageEdit.rotate( 90, <?php echo "$post_id, '$nonce'"; ?>, this)"><?php esc_html_e( 'Rotate left' ); ?></button>
-				<button type="button" class="imgedit-rright button" onclick="imageEdit.rotate(-90, <?php echo "$post_id, '$nonce'"; ?>, this)"><?php esc_html_e( 'Rotate right' ); ?></button>
-				<?php
-			} else {
-				$note_no_rotate = '<p class="note-no-rotate"><em>' . __( 'Image rotation is not supported by your web host.' ) . '</em></p>';
-				?>
-				<button type="button" class="imgedit-rleft button disabled" disabled></button>
-				<button type="button" class="imgedit-rright button disabled" disabled></button>
-			<?php } ?>
-
-			<button type="button" onclick="imageEdit.flip(1, <?php echo "$post_id, '$nonce'"; ?>, this)" class="imgedit-flipv button"><?php esc_html_e( 'Flip vertical' ); ?></button>
-			<button type="button" onclick="imageEdit.flip(2, <?php echo "$post_id, '$nonce'"; ?>, this)" class="imgedit-fliph button"><?php esc_html_e( 'Flip horizontal' ); ?></button>
-
-			<br class="imgedit-undo-redo-separator" />
-			<button type="button" id="image-undo-<?php echo $post_id; ?>" onclick="imageEdit.undo(<?php echo "$post_id, '$nonce'"; ?>, this)" class="imgedit-undo button disabled" disabled><?php esc_html_e( 'Undo' ); ?></button>
-			<button type="button" id="image-redo-<?php echo $post_id; ?>" onclick="imageEdit.redo(<?php echo "$post_id, '$nonce'"; ?>, this)" class="imgedit-redo button disabled" disabled><?php esc_html_e( 'Redo' ); ?></button>
-			<?php echo $note_no_rotate; ?>
-		</div>
-
-		<input type="hidden" id="imgedit-sizer-<?php echo $post_id; ?>" value="<?php echo $sizer; ?>" />
-		<input type="hidden" id="imgedit-history-<?php echo $post_id; ?>" value="" />
-		<input type="hidden" id="imgedit-undone-<?php echo $post_id; ?>" value="0" />
-		<input type="hidden" id="imgedit-selection-<?php echo $post_id; ?>" value="" />
-		<input type="hidden" id="imgedit-x-<?php echo $post_id; ?>" value="<?php echo isset( $meta['width'] ) ? $meta['width'] : 0; ?>" />
-		<input type="hidden" id="imgedit-y-<?php echo $post_id; ?>" value="<?php echo isset( $meta['height'] ) ? $meta['height'] : 0; ?>" />
-
-		<div id="imgedit-crop-<?php echo $post_id; ?>" class="imgedit-crop-wrap">
-		<img id="image-preview-<?php echo $post_id; ?>" onload="imageEdit.imgLoaded('<?php echo $post_id; ?>')" src="<?php echo admin_url( 'admin-ajax.php', 'relative' ); ?>?action=imgedit-preview&amp;_ajax_nonce=<?php echo $nonce; ?>&amp;postid=<?php echo $post_id; ?>&amp;rand=<?php echo rand( 1, 99999 ); ?>" alt="" />
-		</div>
-
-		<div class="imgedit-submit">
-			<input type="button" onclick="imageEdit.close(<?php echo $post_id; ?>, 1)" class="button imgedit-cancel-btn" value="<?php esc_attr_e( 'Cancel' ); ?>" />
-			<input type="button" onclick="imageEdit.save(<?php echo "$post_id, '$nonce'"; ?>)" disabled="disabled" class="button button-primary imgedit-submit-btn" value="<?php esc_attr_e( 'Save' ); ?>" />
-		</div>
 	</div>
-
-	</div>
 	<div class="imgedit-wait" id="imgedit-wait-<?php echo $post_id; ?>"></div>
 	<div class="hidden" id="imgedit-leaving-<?php echo $post_id; ?>"><?php _e( "There are unsaved changes that will be lost. 'OK' to continue, 'Cancel' to return to the Image Editor." ); ?></div>
 	</div>
Index: src/wp-includes/script-loader.php
===================================================================
--- src/wp-includes/script-loader.php	(revision 48262)
+++ src/wp-includes/script-loader.php	(working copy)
@@ -1465,7 +1465,7 @@
 			)
 		);
 
-		$scripts->add( 'image-edit', "/wp-admin/js/image-edit$suffix.js", array( 'jquery', 'json2', 'imgareaselect' ), false, 1 );
+		$scripts->add( 'image-edit', "/wp-admin/js/image-edit$suffix.js", array( 'jquery', 'jquery-ui-core', 'json2', 'imgareaselect' ), false, 1 );
 		did_action( 'init' ) && $scripts->localize(
 			'image-edit',
 			'imageEditL10n',