Hi Brian,
I regret for the inconvenience caused.
The Inner XML not updated for the removed attributes in an HTML element is known issue.
A defect report have been placed with our developers regarding this issue.
http://www.syncfusion.com/support/issues/htmlui/Default.aspx?ToDo=view&questId=2699Please refer the above link for the status updates of this bug fix.
I will update you once I hear back from our developers.
Thank you for your interest in Syncfusion products.
Regards,
Nanda