diff --git a/js/ui.js b/js/ui.js
index 672ba3f..95f3a63 100644
--- a/js/ui.js
+++ b/js/ui.js
@@ -197,7 +197,7 @@ async function renderDetailPage(vmid) {
             <span class="tl-time">${fmtDateFull(e.changed_at)}</span>
           </div>`;
         const label = FIELD_LABELS[e.field] ?? esc(e.field);
-        const newCls = e.field === 'state'
+        const newCls = (e.field === 'state' || e.field === 'stack')
           ? `badge ${esc(e.new_value)}`
           : `tl-new ${stateClass(e.field, e.new_value)}`;
         return `