fix

js/interactive_grid.js

@@ -222,13 +222,13 @@ function drawBackgroundBefore() {
 
         const scale = Math.max(scaleX, scaleY);
 
-        const newWidth = bgWidth * scale;
-        const newHeight = bgHeight * scale;
+        const newWidth = bgWidth * scaleX;
+        const newHeight = bgHeight * scaleY;
 
         const xOffset = (canvasWidth - newWidth) / 2;
         const yOffset = (canvasHeight - newHeight) / 2;
 
-        ctx_bef.drawImage(canvasBg_bef, 0, 0, bgWidth, bgHeight, 0, 0, newWidth, newHeight);
+        ctx_bef.drawImage(canvasBg_bef, 0, 0, bgWidth, bgHeight, xOffset, yOffset, newWidth, newHeight);
     }
 }
 
@@ -245,8 +245,8 @@ function drawBackgroundAfter() {
 
         const scale = Math.max(scaleX, scaleY);
 
-        const newWidth = bgWidth * scale;
-        const newHeight = bgHeight * scale;
+        const newWidth = bgWidth * scaleX;
+        const newHeight = bgHeight * scaleY;
 
         const xOffset = (canvasWidth - newWidth) / 2;
         const yOffset = (canvasHeight - newHeight) / 2;