I'm closing this as it's fixed in Emacs 25.

    -- Anders

On Mon, Jan 25, 2016 at 9:41 AM, Anders Lindgren <andlind@gmail.com> wrote:

> Hi!
>
>
>> It seems that 25 fixes the problem. The bug does NOT occur with
>>
>> Emacs-2016-01-24_01-41-01-8cdb9ac0fb060366bc823de84ecdba258716addb-universal.dmg
>> from that address. I also checked the build of 24 up there (
>> Emacs-24.5-1-universal.dmg ) and it still has the same bug, but I can
>> confirm that the bug is gone in that nightly build of 25.
>>
>
> This is great news! I will close the bug, but I will investigate the cause
> of the regression I noticed.
>
>
> I'm totally happy to help debug the problem in 24, as it would be an
>> excuse to understand the development process better, but I'm also happy
>> to wait for 25.1 to become stable, which seems imminent.
>>
>
>
>> Say the word and I'll figure out how to compile a debugging version of
>> 24 (I just managed to codesign gdb), but I suspect that energy may be
>> better spent on 25.
>>
>
> No need, as it is fixed in Emacs 25.
>
> Of course, if you feel like contributing to NS interface in Emacs 25,
> you're more than welcome, as the long time maintainer retired last year.
>
>     -- Anders
>
>