Index: src/wp-includes/js/media-views.js
===================================================================
--- src/wp-includes/js/media-views.js	(revision 31098)
+++ src/wp-includes/js/media-views.js	(working copy)
@@ -3767,7 +3767,7 @@
 				return;
 			}
 
-			tabbables = this.$( ':tabbable' );
+			tabbables = this.$( ':tabbable' ).not( 'input[type="file"]' );
 
 			// Keep tab focus within media modal while it's open
 			if ( tabbables.last()[0] === event.target && ! event.shiftKey ) {