Mutt losing folders with new mails with additional session

[mike9 at posteo.nl]

* On 07.07. Kevin J. McCarthy muttered:

> On Mon, Jul 06, 2020 at 08:39:49PM -0700, Kevin J. McCarthy wrote:
> >Also, I wonder if you would mind trying a vanilla mutt 1.14.5 release.

Here vanilla mutt 1.14.5 also looses the information of the
new-mail-folder like stated for Gentoo-mutt 1.13.5 or 1.14.4-r1.

> >A quick test on my side wasn't able to duplicate this,

Hm. Why do I encounter the issue with the same version? Can I
provide more information?

> Do you have $mail_check_stats set?

No.

Mike