Greetings all,

Has anyone experienced, and can share the remedy to, the htmleditor's suite of formatting buttons working fine in firefox 38 but not working in firefox 52.1.1? We are using Ext JS version 3.4. Typing some text into the htmleditor's text area then attempting to apply formatting using any of the buttons arrayed across the top raises a 'Can't access dead object' message in firefox 52.1.1, visible when you turn on firefox's Web Console. Clearly the later firefox release stepped on something, but I'm at a loss at how to remedy.

As an aside, that same htmleditor does not raise an error in Internet Explorer 11 - the formatting buttons work fine.

Thanks in advance for any advice you can give.