when checking whether the wrapper element is still part of the DOM, check all the way up to the document body

Author: jochenberger

lib/codemirror.js

@@ -1316,10 +1316,11 @@ window.CodeMirror = (function() {
     // Prevent wrapper from ever scrolling
     on(d.wrapper, "scroll", function() { d.wrapper.scrollTop = d.wrapper.scrollLeft = 0; });
     on(window, "resize", function resizeHandler() {
+      var currentParent = d.wrapper.parentNode;
       // Might be a text scaling operation, clear size caches.
       d.cachedCharWidth = d.cachedTextHeight = null;
       clearCaches(cm);
-      if (d.wrapper.parentNode) updateDisplay(cm, true);
+      if (currentParent === document.body) updateDisplay(cm, true);
       else off(window, "resize", resizeHandler);
     });