diff --git a/frontend/js/boot.js b/frontend/js/boot.js
index fcc2eff9..4cda3565 100644
--- a/frontend/js/boot.js
+++ b/frontend/js/boot.js
@@ -47,7 +47,7 @@ document.addEventListener("DOMContentLoaded", () => {
         text = text.replace("[OK]", '<span class="boot-ok">[OK]</span>');
       }
 
-      line.innerHTML = text;
+      line.textContent = text;
       bootInner.appendChild(line);
 
       // Auto scroll to bottom
diff --git a/frontend/js/leaderboard/compare.js b/frontend/js/leaderboard/compare.js
index cad75c17..3c25359a 100644
--- a/frontend/js/leaderboard/compare.js
+++ b/frontend/js/leaderboard/compare.js
@@ -847,3 +847,5 @@ function renderProgressHistoryChart() {
     },
   });
 }
+
+.catch(err => console.error("Promise.all failed:", err));
\ No newline at end of file
diff --git a/frontend/js/matrix.js b/frontend/js/matrix.js
index cfb530d7..4ce05e06 100644
--- a/frontend/js/matrix.js
+++ b/frontend/js/matrix.js
@@ -94,5 +94,5 @@ document.addEventListener("DOMContentLoaded", () => {
   }
 
   // We don't want the matrix to be super smooth 60fps, Matrix screens look good around 30fps
-  setInterval(draw, 1000 / FPS);
+  clearInterval(window.__interval); window.__interval = setInterval(draw, 1000 / FPS);
 });
diff --git a/frontend/js/navbar.js b/frontend/js/navbar.js
index f67e0349..e2f11547 100644
--- a/frontend/js/navbar.js
+++ b/frontend/js/navbar.js
@@ -4,7 +4,7 @@ document.addEventListener("DOMContentLoaded", () => {
 
   const currentPath = window.location.pathname;
 
-  nav.innerHTML = `
+  nav.textContent = `
     <div class="container">
       <a href="/" class="nav-brand">
         <img src="/assets/logo.png" alt="CodePVG Logo" class="nav-logo" />