diff --git a/frontend/editor-poc.html b/frontend/editor-poc.html
index 265aa37..009dc01 100644
--- a/frontend/editor-poc.html
+++ b/frontend/editor-poc.html
@@ -1337,11 +1337,14 @@ body { font-family: var(--sans); background: var(--bg); color: var(--text); heig
 
   // ---- Auto-height textarea (fill available space, grow beyond) ----
   function autoHeight() {
+    var st = ta.scrollTop;
     ta.style.height = 'auto';
     var contentH = ta.scrollHeight;
     // Minimum: fill the editor-wrap's visible area minus padding
     var wrapH = editorWrap.clientHeight - 48;
     ta.style.height = Math.max(contentH, wrapH) + 'px';
+    // Restore scroll position: prevent cursor jump on every keystroke
+    ta.scrollTop = st;
   }
   ta.addEventListener('mouseup', function() { setTimeout(showBubble, 50); });
   // Bubble follows cursor on any selection change (keyboard too)