Draw selection overlay later

frontend/src/sections/Editor2D.svelte

@@ -139,12 +139,6 @@
     ctx.drawImage(file.canvas.canvas, offsetX, offsetY)
     ctx.restore()
 
-    // Draw our selection overlay.
-    if (file.selection.active) {
-      ctx.imageSmoothingEnabled = false
-      ctx.drawImage(file.selection.marchingCanvas, offsetX*zoom, offsetY*zoom)
-    }
-
     // FIXME: Reorganize overlay drawing to have two types: regular composition, such as this pixel brush preview, and difference composition for cursors and bounding boxes.
     // Draw brush preview.
     if (currentTool instanceof BrushTool) {
@@ -203,6 +197,12 @@
       ctx.stroke()
     }
 
+    // Draw our selection overlay.
+    if (file.selection.active) {
+      ctx.imageSmoothingEnabled = false
+      ctx.drawImage(file.selection.marchingCanvas, offsetX*zoom, offsetY*zoom)
+    }
+
     // Draw our overlay with difference composition so visibility is better.
     ctx.save()
     ctx.globalCompositeOperation = 'difference'