Update app.py

app.py

@@ -510,7 +510,13 @@ function draw() {
     });
 
     document.getElementById("arc-reset").onclick = resetOpacity;
-    svg.on("click", function(evt){ if(evt.target.tagName === "svg") resetOpacity(); });
+    svg.on("click", function(evt){
+        // Only reset when clicking empty background, not circles, not labels, not paths
+        if (evt.target === this) {
+            resetOpacity();
+        }
+    });
+
 
 }