Package: screen
Version: 4.9.1-1
Severity: important

GNU screen outputs some data to the main screen instead of the
alternate screen. I suspect that this occurs when the session is
detached: the main screen is restored, but GNU screen still outputs
data from its current window.

I've attached a screenshot of the xterm window and the corresponding
log (compressed).

What's strange is that I think that I've never noticed this issue
before today, while it is now often reproducible. It could be
related to some other upgrade on the system.

-- Package-specific info:
File Existence and Permissions
------------------------------

drwxr-xr-x 40 root root   1140 2025-05-01 14:10:22 /run
lrwxrwxrwx  1 root root      4 2023-10-07 13:42:09 /var/run -> /run
-rwxr-xr-x  1 root root 486488 2023-09-07 00:10:56 /usr/bin/screen
-rw-r--r--  1 root root    119 2023-10-07 18:37:37 
/etc/tmpfiles.d/screen-cleanup.conf
lrwxrwxrwx  1 root root      9 2023-10-07 18:37:37 
/lib/systemd/system/screen-cleanup.service -> /dev/null
-rwxr-xr-x  1 root root   1222 2022-11-04 03:35:12 /etc/init.d/screen-cleanup
lrwxrwxrwx  1 root root     24 2023-10-07 18:37:37 /etc/rcS.d/S01screen-cleanup 
-> ../init.d/screen-cleanup

File contents
-------------

### /etc/tmpfiles.d/screen-cleanup.conf
______________________________________________________________________
# This file is generated by /var/lib/dpkg/info/screen.postinst upon package 
configuration
d /run/screen 1777 root utmp
______________________________________________________________________

-- System Information:
Debian Release: trixie/sid
  APT prefers unstable-debug
  APT policy: (500, 'unstable-debug'), (500, 'stable-updates'), (500, 
'stable-security'), (500, 'stable-debug'), (500, 'proposed-updates-debug'), 
(500, 'unstable'), (500, 'testing'), (500, 'stable'), (1, 'experimental')
Architecture: amd64 (x86_64)

Kernel: Linux 6.12.25-amd64 (SMP w/16 CPU threads; PREEMPT)
Locale: LANG=C.UTF-8, LC_CTYPE=C.UTF-8 (charmap=UTF-8), LANGUAGE not set
Shell: /bin/sh linked to /usr/bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled

Versions of packages screen depends on:
ii  debianutils   5.22
ii  libc6         2.41-7
ii  libcrypt1     1:4.4.38-1
ii  libpam0g      1.7.0-3
ii  libtinfo6     6.5+20250216-2
ii  libutempter0  1.2.1-4

screen recommends no packages.

Versions of packages screen suggests:
pn  byobu | screenie | iselect  <none>
ii  ncurses-term                6.5+20250216-2

-- no debconf information

-- 
Vincent Lefèvre <vinc...@vinc17.net> - Web: <https://www.vinc17.net/>
100% accessible validated (X)HTML - Blog: <https://www.vinc17.net/blog/>
Work: CR INRIA - computer arithmetic / Pascaline project (LIP, ENS-Lyon)

Attachment: Xterm.log.qaa.2025.05.01.14.13.01.838805.xz
Description: Binary data

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