User Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_10_5) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/48.0.2564.97 Safari/537.36 Steps to reproduce: See http://codepen.io/anon/pen/EPeOGY Or make a page with this html: <!DOCTYPE html><html><head></head><body> Focus the editable, and press right arrow over and over. <div dir="rtl" contenteditable="true">Englishעברית</div> </body></html> Focus the editable, and press right arrow over and over. Actual results: Cursor loops over the rtl word. Expected results: Cursor should stop at the right edge. Note - if you add other html before or after on the page, the bug often stops happening. Also, I have seen it happen on the first word in a rtl contenteditable. This was happening consistently on a complex page for me, but I was unable to determine the cause. A strange workaround that prevented it was to place a dummy <div style="inline"> </div> node before and after the contenteditable, but that is obviously not ideal. Using a span did not work, neither did a div without the inline style, nor the by itself.