The isearch problem was the same.. the face in the beginning of the string got applied to the whole string. 

So after C-s,

Instead of "Isearch: " showing in a different face than that of the use input in the minibuffer, "Isearch: " prompt + user input search string showed up in the same face. 

On Fri, Jul 8, 2016, 3:40 PM Eli Zaretskii <eliz@gnu.org> wrote:

A problem in Isearch was also mentioned by Mark Oteiza in the context
of this bug, but I see no details for it.  Can someone please tell
what was the problem, so I could verify it no longer exists after the
fix?

Thanks.
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Kaushal Modi