Fix #1403 Cannot unload individual animations

No scroll bars in variable placeholder code field
Add event hook for update view
Fix issue where animation rotate tool would not update rotation

css/panels.css

@@ -889,6 +889,9 @@
 	}
 
 /* Placeholders */
+	#var_placeholder_area {
+		overflow: auto;
+	}
 	#placeholder_buttons li {
 		padding: 0px 8px;
 	}

js/animations/animation.js

@@ -730,8 +730,8 @@ class Animation {
 			icon: 'remove',
 			condition: () => Format.animation_files,
 			click(animation) {
-				Undo.initEdit({animations: [this]})
-				this.remove(false, false);
+				Undo.initEdit({animations: [animation]})
+				animation.remove(false, false);
 				Undo.finishEdit('Unload animation', {animations: []})
 			}
 		},

js/preview/canvas.js

@@ -747,8 +747,6 @@ const Canvas = {
 	 * @param {boolean} options.selection Update the selection
 	 */
 	updateView(options) {
-
-
 		if (options.elements) {
 			let aspects = options.element_aspects || {};
 			options.elements.forEach(element => {
@@ -781,6 +779,7 @@ const Canvas = {
 		if (options.selection) {
 			updateSelection();
 		}
+		Blockbench.dispatchEvent('update_view', options);
 	},
 	//Main updaters
 	clear() {

js/preview/transformer.js

@@ -1402,9 +1402,8 @@
 							
 						displayDistance(value - originalValue);
 
-						if (Toolbox.selected.id === 'rotate_tool' && BarItems.rotation_space.value !== 'bone') {} else {
 						Animator.preview()
-						}
+
 						previousValue = value
 						scope.hasChanged = true
 					}