bug#28512: 26.0.60; undecorated frames on macOS 10.13 do not resize properly

[Aaron Jensen]

On September 25, 2017 at 3:13:23 AM, Alan Third
(alan@idiocy.org(mailto:alan@idiocy.org)) wrote:

> On Sun, Sep 24, 2017 at 05:39:05PM -0700, Aaron Jensen wrote:
> >
> > I may have something. If the initial frame is created with undecorated
> > set from the beginning, it works. Likewise if you create a new frame
> > after:
> >
> > (add-to-list 'default-frame-alist '(undecorated . t))
> >
> > So, the problem may have something to do with transitioning from a
> > decorated frame to an undecorated frame. I remember seeing something
> > in the iterm2 code about recreating windows in certain instances, but
> > I don’t remember where I saw that.
>
> I’m beginning to lean towards this being a bug in the 10.13
> pre‐release, given the lack of evidence that this is intentional.

Looks like it reproduces easily:
https://github.com/aaronjensen/macOS-10.13-borderless-bug-repro

> I suppose the sensible thing to do would be to raise a bug report with
> Apple and see if they say anything, or wait for the next release and
> see if it’s still a problem.

Ok, I’ll do this.

Thanks,

Aaron