Thanks for your answer and sorry for not reading the NEWS first!

/s

On Thu, May 3, 2018 at 3:38 PM Eli Zaretskii <eliz@gnu.org> wrote:

> On May 3, 2018 3:22:24 PM GMT+03:00, Stefan Guath <stefan@automata.se>
> wrote:
> > VERSION
> > "GNU Emacs 26.1 (build 1, x86_64-apple-darwin13.4.0, NS appkit-1265.21
> > Version 10.9.5 (Build 13F1911)) of 2018-04-10"
> >
> > DESCRIPTION
> > Functions added to window-configuration-change-hook are not executed
> > in
> > 26.1rc1. It works in 25.3.1.
> >
> > TO REPRODUCE
> > 1) emacs -q
> > 2) Eval in *scratch*: (add-hook 'window-configuration-change-hook
> > (lambda
> > () (ding)))
> > 3) Resize window
> > 4) There is no sound (i.e. ding is not executed) on 26.1rc1. It works
> > as
> > expected on 25.3.1.
>
> This is a deliberate change, it is called out in NEWS.  There is another
> hook to use for size changes.
>
>