Visual editor damages edited text

[spoko_ws]

I've written a page in internal HTML editor. When I update the page, it appears with some additional characters taken from the inside of the message. I can not force it to save exactly what I write inside, no matter how often I update the page. I'm including the whole page, such that you can reproduce the problem.

The page, which I cannot save clearly into database

It seems your external HTML doesn't conform to the requirement neither for the visual editor nor for the HTML editor.

Scratch that, think I misread the ticket. The attached html code is taken from the HTML editor and seems to show properly in the visual editor (except one irregularity where a nested table pushes the content of other cells lower, but that depends on the styling).

Can you show what characters shouldn't be there? Include screenshot(s) if needed.

See also: #16239

Tested in 3.5 with Twenty Twelve. Couldn't see any additional characters. Visual, Text and preview looks the same.