Fix crash on document switch (#690)

fix crash on unwrap

editor/src/document/transformation.rs

@@ -264,16 +264,19 @@ impl<'a> Selected<'a> {
 
 	pub fn revert_operation(&mut self) {
 		for path in self.selected {
-			self.responses.push_back(
+			if let Some(transform) = self.original_transforms.get(*path) {
+				// Push front to stop document switching before sending the transform
+				self.responses.push_front(
 					DocumentOperation::SetLayerTransform {
 						path: path.to_vec(),
-					transform: (*self.original_transforms.get(*path).unwrap()).to_cols_array(),
+						transform: transform.to_cols_array(),
 					}
 					.into(),
 				);
 			}
 		}
 	}
+}
 
 #[derive(Debug, Clone, PartialEq, Eq, Default)]
 pub struct Typing {