IMAP client forgets password between accounts

I'm trying to read my mailbox after a successful login and some idlying, but NeoMutt 20191102 forgets imap_pass and repeatedly ask for it.

Expected Behaviour

NeoMutt should ask for the password only once at login.

Actual Behaviour

NeoMutt asks for the password after a while, when I try to read new mail in other mailboxes of that account.

If NeoMutt crashed, did your OS create a 'coredump' file? No, it didn't

Steps to Reproduce

How often does this happen?

Always

When did it start to happen?

When I upgraded to NeoMutt 20191101. Seems this bug wasn't caught on release 20191102.

NeoMutt Version

neomutt -v
NeoMutt 20191102
Copyright (C) 1996-2016 Michael R. Elkins und andere.
NeoMutt übernimmt KEINERLEI GEWÄHRLEISTUNG. Starten Sie 'neomutt -vv', um
weitere Details darüber zu erfahren. NeoMutt ist freie Software.
Sie können es unter bestimmten Bedingungen weitergeben; starten Sie
'neomutt -vv' für weitere Details.

System: Linux 5.3.7-arch1-2-ARCH (x86_64)
ncurses: ncurses 6.1.20180127 (compiled with 6.1.20180127)
libidn2: 2.2.0 (compiled with 2.2.0)
GPGme: 1.13.1
hcache backends: kyotocabinet, gdbm, lmdb

Compiler:
Using built-in specs.
COLLECT_GCC=cc
COLLECT_LTO_WRAPPER=/usr/lib/gcc/x86_64-pc-linux-gnu/9.2.0/lto-wrapper
Target: x86_64-pc-linux-gnu
Configured with: /build/gcc/src/gcc/configure --prefix=/usr --libdir=/usr/lib --libexecdir=/usr/lib --mandir=/usr/share/man --infodir=/usr/share/info --with-bugurl=https://bugs.archlinux.org/ --enable-languages=c,c++,ada,fortran,go,lto,objc,obj-c++,d --enable-shared --enable-threads=posix --with-system-zlib --with-isl --enable-__cxa_atexit --disable-libunwind-exceptions --enable-clocale=gnu --disable-libstdcxx-pch --disable-libssp --enable-gnu-unique-object --enable-linker-build-id --enable-lto --enable-plugin --enable-install-libiberty --with-linker-hash-style=gnu --enable-gnu-indirect-function --enable-multilib --disable-werror --enable-checking=release --enable-default-pie --enable-default-ssp --enable-cet=auto gdc_include_dir=/usr/include/dlang/gdc
Thread model: posix
gcc version 9.2.0 (GCC) 

Configure options: --prefix=/usr --sysconfdir=/etc --libexecdir=/usr/lib --gpgme --enable-lua --notmuch --gss --ssl --sasl --with-ui=ncurses --with-idn2=/usr --idn=0 --idn2=1 --lmdb --kyotocabinet --gdbm

Compilation CFLAGS: -march=x86-64 -mtune=generic -O2 -pipe -fno-plt -std=c99 -fno-delete-null-pointer-checks -D_ALL_SOURCE=1 -D_GNU_SOURCE=1 -D__EXTENSIONS__ -I/usr/include -DNCURSES_WIDECHAR

Standard Einstellungen:
  +attach_headers_color +compose_to_sender +compress +cond_date +debug 
  +encrypt_to_self +forgotten_attachments +forwref +ifdef +imap +index_color 
  +initials +limit_current_thread +multiple_fcc +nested_if +new_mail +nntp +pop 
  +progress +quasi_delete +regcomp +reply_with_xorig +sensible_browser +sidebar 
  +skip_quoted +smtp +status_color +timeout +tls_sni +trash 

Einstellungen bei der Kompilierung:
  -autocrypt +bkgdset +color +curs_set +fcntl -flock -fmemopen +futimens 
  +getaddrinfo -gnutls +gpgme +gss +hcache -homespool +idn +inotify 
  -locales_hack +lua +meta -mixmaster +nls +notmuch +openssl +pgp +sasl +smime 
  -sqlite +start_color +sun_attachment +typeahead 
MAILPATH="/var/mail"
PKGDATADIR="/usr/share/neomutt"
SENDMAIL="/usr/sbin/sendmail"
SYSCONFDIR="/etc"

Extra Info

#############################################################################
## mail.sys4.de
# Account
account-hook imap://mail.sys4.de 'set imap_user=--redacted--; set imap_pass=--redacted--'
# Folder
folder-hook imap://mail.sys4.de 'set folder=imap://mail.sys4.de/;'
# folder-hook imap://mail.sys4.de 'set record=+Sent; set trash=+Trash;'
folder-hook imap://mail.sys4.de 'set record=+Sent;'
folder-hook imap://mail.sys4.de 'set smtp_url=smtp://--redacted--@mail.sys4.de:587/; set smtp_pass=--redacted--'
folder-hook imap://mail.sys4.de 'set from="Patrick Ben Koetter <p@sys4.de>";'
folder-hook imap://mail.sys4.de 'set signature=~/.mutt/signature.sys4'
folder-hook imap://mail.sys4.de 'set xterm_title="[*] %f [Msgs:%?M?%M/?%m%?n? neu:%n?%?o? alt:%o?%?d? gel:%d?%?F? Flag:%F?%?t? Tag:%t?%?p? Post:%p?%?b? Inc:%b?%?l? %l?] sort by %s/%S"'
# Macro
macro index,pager <F2> '<change-folder>imap://mail.sys4.de<enter>'

Operating System and its version ARCH Linux, current
Were you using multiple copies of NeoMutt at once? No
Were you using 'screen' or 'tmux'? No
Is your email local (maildir) or remote (IMAP)? remote, IMAP

neomutt / neomutt

IMAP client forgets password between accounts #1927