Here's one that's pretty easy to reproduce - that I think is causing me grief with saving changes made to styles...

 

On your demo site:

 

in the editor - select an item (e.g. just put cursor in a table cell) - choose Style dialog (either from breadcrumbs at bottom or context menu - when the dialog opens - click OK button to close dialog.

 

Get an  'ox19e is not a function' error - happens in IE and Firefox

Is this a known issue?

 

Any fix ETA?