bug#48249: 28.0.50; Regression: emacs confused about window configuration due to ido-mode and/or winner-mode

[Gregory Heytings]

> > [For some reason my emails to Basil are rejected by Outlook ("host 
> > tcd-ie.mail.protection.outlook.com[104.47.4.36] said: 550 5.7.606 
> > Access denied"), so I send this mail to the bugtracker instead, hoping 
> > that he'll get them.]
>
> Were those emails on- or off-list?  Because I received this message of 
> yours: https://bugs.gnu.org/48229#11.

Yes, that was on-list, and you received it through the list, not directly 
from me.

> FWIW, my university email is hosted by Gmail.  I'll send you the 
> relevant email headers I'm seeing off-list.

Not by Gmail, by Microsoft (Outlook):

$ dig +short -t mx tcd.ie
10 tcd-ie.mail.protection.outlook.com.

Whenever you're in the recipient list I receive a "host 
tcd-ie.mail.protection.outlook.com[104.47.4.36] said: 550 5.7.606 Access 
denied" error message.  I'm the one who can do something about it, not 
you, but removing oneself from Outlook's blocklists is a painful process.

> > As I said a few hours ago: could you try to revert 7c2ebf6e23 locally 
> > and see if the issue persists?
>
> I can't revert the commit cleanly, but I can reproduce Dima's recipe on 
> that revision and not on its parent.

Indeed, but what about your recipe (bug#48229)?