Fix 'Oh snap' behaviour

Author: Ives van Hoorne

packages/app/src/sandbox/compile.js

@@ -347,7 +347,10 @@ async function compile({
     // We set it as a time value for people that run two sandboxes on one computer
     // they execute at the same time and we don't want them to conflict, so we check
     // if the message was set a second ago
-    if (Date.now() < localStorage.getItem('running') > 1000) {
+    if (
+      localStorage.getItem('running') &&
+      Date.now() - localStorage.getItem('running') > 1000
+    ) {
       localStorage.removeItem('running');
       showRunOnClick();
       return;