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Changes between Initial Version and Version 1 of Ticket #52133, comment 22

initial	v1
2	2	> I've confirmed that you can also trigger this issue by initiating a drag-and-drop on the metabox.
3	3
4		Unfortunately this is a known problem that has always existed. Nothing to do with TinyMCE, the browsers would "empty" iframes when they are dragged (their position/patent node changes in the DOM). That's a security precaution afaik.
	4	Unfortunately this is a known problem that has always existed. Nothing to do with TinyMCE, the browsers would "empty" iframes when they are dragged (their position/parent node changes in the DOM). That's a security precaution afaik.
5	5
6	6	There is a possible workaround for this involving deleting the TinyMCE instance on dragstart (can be quite choppy), and re-initializing it after dragend but it was failing a lot (about 1/5 loosely depending on content length) last time I tested it.