diff --git a/aqt/editor.py b/aqt/editor.py
index 55b46584c..810c082f0 100644
--- a/aqt/editor.py
+++ b/aqt/editor.py
@@ -95,13 +95,6 @@ function onKeyUp(elem) {
     if (!elem.lastChild || elem.lastChild.nodeName.toLowerCase() != "br") {
         elem.appendChild(document.createElement("br"));
     }
-    var old = elem.innerHTML;
-    var new_ = old.replace(/<([biu])><br><\\/\\1>/g, "");
-    if (old != new_) {
-        elem.innerHTML = new_;
-        // this may have caused the cursor to disappear
-        caretToEnd();
-    }
 }
 
 function sendState() {