Folder list looks bogus

[winnieXY]

Steps to reproduce

I have a quite huge structure in my mailbox, mainly because the archive is quite big.

The Archive contains folders for each year (2006, 2007, ...) but also some named folders (E.g. Debian).
Strangely the year folders are shown below the Archiv main folder - the named folders not (see attached screenshot).

Expected behavior

The folder structure is as build up and shown by every other mail client (snappymail, outlook, thunderbird, all android mail clients i tested so far, ...

Actual behavior

see screenshot avoe

Mail app version

5.7.0

Nextcloud version

32

Mailserver or service

dovecot

Operating system

docker

PHP engine version

None

Nextcloud memory caching

No response

Web server

Apache (supported)

Database

MySQL

Additional info

my Dovecot Config for the inbox:

namespace inbox {
  # Namespace type: private, shared or public
  #type = private

  # Hierarchy separator to use. You should use the same separator for all
  # namespaces or some clients get confused. '/' is usually a good one.
  # The default however depends on the underlying mail storage format.
  separator = .

  # Prefix required to access this namespace. This needs to be different for
  # all namespaces. For example "Public/".
  prefix = INBOX.

  # Physical location of the mailbox. This is in same format as
  # mail_location, which is also the default for it.
  #location =

  # There can be only one INBOX, and this setting defines which namespace
  # has it.
  inbox = yes

  # If namespace is hidden, it's not advertised to clients via NAMESPACE
  # extension. You'll most likely also want to set list=no. This is mostly
  # useful when converting from another server with different namespaces which
  # you want to deprecate but still keep working. For example you can create
  # hidden namespaces with prefixes "~/mail/", "~%u/mail/" and "mail/".
  #hidden = no

  # Show the mailboxes under this namespace with LIST command. This makes the
  # namespace visible for clients that don't support NAMESPACE extension.
  # "children" value lists child mailboxes, but hides the namespace prefix.
  list = yes

  # Namespace handles its own subscriptions. If set to "no", the parent
  # namespace handles them (empty prefix should always have this as "yes")
  #subscriptions = yes
}

[kesselb]

Thanks for flagging it 👍

Could you please take a look at the database oc_mail_mailboxes. Filter by the account id. Export id, name, attributes, delimiter.

[winnieXY]

Hey @kesselb,

I've send that information to you in private mail.

[winnieXY]

@kesselb: do you got the mail?

[winnieXY]

Any news here? I'm currently using snappymail but this apps seems to be pretty abandoned currently - I really would like to switch to the original mail client if possible - however the folder layout is currently a showstopper :S

[nextcloud-command]

Hi there! It looks like this issue hasn’t seen much activity for a while and might need a bit more information to move forward. If we don’t hear back soon, we may close it to keep things organized. Thanks again for your contributions – we really appreciate it!

[winnieXY]

Ping, any news? If you need any additional information please let me know.