diff --git a/src/kiri-mode/cam/client.js b/src/kiri-mode/cam/client.js
index d40c0e10..df5fd9d5 100644
--- a/src/kiri-mode/cam/client.js
+++ b/src/kiri-mode/cam/client.js
@@ -1683,7 +1683,6 @@ function updateStock() {
     const { x, y, z, center } = stock;
 
     UI.func.animate.classList.add('disabled');
-
     if (x && y && z) {
         UI.func.animate.classList.remove('disabled');
         if (!camStock) {
diff --git a/src/kiri/platform.js b/src/kiri/platform.js
index dd067f9e..a64e030e 100644
--- a/src/kiri/platform.js
+++ b/src/kiri/platform.js
@@ -197,7 +197,7 @@ function platformUpdateBounds() {
     const bounds = new THREE.Box3();
     api.widgets.each(widget => {
         let wp = widget.track.pos;
-        let wb = widget.getBoundingBox();
+        let wb = widget.getBoundingBox().clone();
         wb.min.x += wp.x;
         wb.max.x += wp.x;
         wb.min.y += wp.y;