diff --git a/src/App.css b/src/App.css
index 04abfb995c6e6ed8d3aea602012ffe0abbb6ae89..e4f85bf6d0ed552a0910b9008038c02385a48bbe 100644
--- a/src/App.css
+++ b/src/App.css
@@ -25,6 +25,7 @@
 .level-entity {
   position: absolute;
   z-index: 10;
+  image-rendering: crisp-edges;
 }
 
 .render-controls {
diff --git a/src/App.js b/src/App.js
index 705702ac8a917838b6355870fe36b143376b9301..18a49bae60f994821a6f78f8bb489a0a0ecf7ebb 100644
--- a/src/App.js
+++ b/src/App.js
@@ -42,7 +42,10 @@ class App extends Component<{}> {
         );
     }
 
-    set = (name, value = null) => e => this.setState(s => ({ [name]: value && value.call ? value(s) : value || e.currentTarget.value }))
+    set = (name, value = null) => e => {
+        const targetValue = e.currentTarget.value
+        this.setState(s => ({ [name]: value && value.call ? value(s) : value || targetValue }))
+    }
 }
 
 export default App;