Bug#990258: konsole: Key combination Alt+S peeks shell when in editor.

[? <GMcPherran@Outlook.com>]

Package: konsole
Version: 4:20.12.3-1
Severity: normal
X-Debbugs-Cc: GMcPherran@Outlook.com

Dear Maintainer,

When in an editor that was started from a shell in konsole,
if I press Alt+S, the editor window/text becomes invisible and
the underlying shell is displayed.

I have observed this in both nano and vim.

In nano, I bind Alt+S to whereis and this bug causes nano to
become unresponsive after Alt+S until ^C is pressed.

I also considered if the problem could be my shell. I use zsh.
However, this problem was not seen in another terminal emulator
e.g. Tilda.

Expected: Alt+S usable for binding to editor command.
Result: Causes "peek" to shell (shows the underlying shell).

Thank You


-- System Information:
Debian Release: 11.0
  APT prefers testing-security
  APT policy: (500, 'testing-security'), (500, 'testing')
Architecture: amd64 (x86_64)

Kernel: Linux 5.10.0-7-amd64 (SMP w/16 CPU threads)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.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 konsole depends on:
ii  kio                    5.78.0-4
ii  konsole-kpart          4:20.12.3-1
ii  libc6                  2.31-12
ii  libkf5configcore5      5.78.0-4
ii  libkf5configwidgets5   5.78.0-2
ii  libkf5coreaddons5      5.78.0-4
ii  libkf5crash5           5.78.0-3
ii  libkf5dbusaddons5      5.78.0-2
ii  libkf5globalaccel-bin  5.78.0-3
ii  libkf5globalaccel5     5.78.0-3
ii  libkf5i18n5            5.78.0-2
ii  libkf5iconthemes5      5.78.0-2
ii  libkf5kiowidgets5      5.78.0-4
ii  libkf5notifyconfig5    5.78.0-2
ii  libkf5widgetsaddons5   5.78.0-2
ii  libkf5windowsystem5    5.78.0-2
ii  libkf5xmlgui5          5.78.0-2
ii  libqt5core5a           5.15.2+dfsg-7
ii  libqt5gui5             5.15.2+dfsg-7
ii  libqt5widgets5         5.15.2+dfsg-7
ii  libstdc++6             10.2.1-6

konsole recommends no packages.

Versions of packages konsole suggests:
pn  lrzsz  <none>

-- no debconf information