On Mon, Apr 22 2019, Eric Abrahamsen wrote:

> Deus Max <deusmax@gmx.com> writes:
>
>> On Sun, Apr 14 2019, Basil L. Contovounesios wrote:
>>
>>> Deus Max <deusmax@gmx.com> writes:
>>>
>>>> Following the recent strange behaviors with gnus group buffers and other
>>>> gnus related stuff, I decided to have a clean start for my gnus:
>>>>
>>>> 1. removed the gnus start-up files:
>>>>    mv .newsrc dot-newsrc
>>>>    mv .newsrc.eld dot-newsrc.eld
>>>>    mv .gnus.el dot-gnus.el   -- (empty anyway)
>>>>    rm .*~
>>>
>>> Can you reproduce this starting from 'emacs -Q' in a clean HOME
>>> directory, i.e. with
>>>
>>>   HOME=$(mktemp -d) emacs -Q
>>>
>>> or similar?  I ask because it is possible for something in your
>>> configuration and/or home directory to be interfering, see e.g.
>>> https://debbugs.gnu.org/35208#11
>>>
>>> Thanks,
>>
>> Yes and I did.
>> Repeating with a clean HOME directory gives the same results wrt
>>           the gnus behavior described above.
>
> I'm trying to imagine what could be causing this behavior, and so far
> haven't come up with any likely theories! You mentioned removing your
> start-up files before starting this experiment, but you must have some
> config in place to define the two imap servers: can you show me the
> absolute minimum config sufficient to display this weirdness? (And would
> you mind updating to the most recent master before you do? It's possible
> some recent updates might have addressed this.)
>
> Thanks,
> Eric

I tried this on Sat Apr. 20 and got the same results.
Also today, by pulling to the latest commit:
    : commit 981470e3590534a4d2947dfe5626cae832c6502d
    : Author: Philipp Stephani <phst@google.com>
    : Date:   Mon Apr 22 18:58:51 2019 +0200

compiling with "make bootstrap" and running from a (almost) empty
directory as:  ~HOME=$(pwd) Emacs~
The HOME directory is ~/tmp/emacs-test

Again the same results!!
I believe the same results should be repeatable, if running with 2
imap servers, one defined in the gnus-select-method variable and the
other in the gnus-secondary-select-methods.

Then the "primary" select method groups exist twice, once without group
prefix (ex INBOX) and once with (ex nnimap+gmx:INBOX).