Index: src/wp-includes/js/customize-views.js
===================================================================
--- src/wp-includes/js/customize-views.js	(revision 39893)
+++ src/wp-includes/js/customize-views.js	(working copy)
@@ -153,7 +153,7 @@
 
 		removeImage: function(e) {
 			e.stopPropagation();
-			this.model.destroy();
+			this.model.destroy({wait: true});
 			this.remove();
 		}
 	});
Index: src/wp-includes/js/media-views.js
===================================================================
--- src/wp-includes/js/media-views.js	(revision 39893)
+++ src/wp-includes/js/media-views.js	(working copy)
@@ -3281,7 +3281,7 @@
 		event.preventDefault();
 
 		if ( window.confirm( l10n.warnDelete ) ) {
-			this.model.destroy();
+			this.model.destroy({wait: true});
 			// Keep focus inside media modal
 			// after image is deleted
 			this.controller.modal.focusManager.focus();
@@ -3302,7 +3302,7 @@
 				library._requery( true );
 			} );
 		}  else {
-			this.model.destroy();
+			this.model.destroy({wait: true});
 		}
 	},
 	/**
@@ -3968,7 +3968,7 @@
 								return;
 							}
 
-							model.destroy();
+							model.destroy({wait: true});
 						} );
 
 						selection.remove( removed );
Index: src/wp-includes/js/media/views/attachment/details.js
===================================================================
--- src/wp-includes/js/media/views/attachment/details.js	(revision 39893)
+++ src/wp-includes/js/media/views/attachment/details.js	(working copy)
@@ -64,7 +64,7 @@
 		event.preventDefault();
 
 		if ( window.confirm( l10n.warnDelete ) ) {
-			this.model.destroy();
+			this.model.destroy({wait: true});
 			// Keep focus inside media modal
 			// after image is deleted
 			this.controller.modal.focusManager.focus();
@@ -85,7 +85,7 @@
 				library._requery( true );
 			} );
 		}  else {
-			this.model.destroy();
+			this.model.destroy({wait: true});
 		}
 	},
 	/**
Index: src/wp-includes/js/media/views/attachments/browser.js
===================================================================
--- src/wp-includes/js/media/views/attachments/browser.js	(revision 39893)
+++ src/wp-includes/js/media/views/attachments/browser.js	(working copy)
@@ -237,7 +237,7 @@
 								return;
 							}
 
-							model.destroy();
+							model.destroy({wait: true});
 						} );
 
 						selection.remove( removed );