The issue was with inline table editing. Here's how to turn it off:
// disable table editing
doc.execCommand("enableInlineTableEditing", null, false);
Frage
Firefox (20.0.1) displays drag & drop icons around contenteditable elements when they are focussed.
How can I disable these icons?
Example below: Arrows around "THREE".
Lösung
The issue was with inline table editing. Here's how to turn it off:
// disable table editing
doc.execCommand("enableInlineTableEditing", null, false);