Bug 378808

First discovered when using Latte Dock and determined to be an error with the taskmanager by conversation with the creator of Latte Dock. The error also occurs with some desktop-based widgets. 

The files modified are kdesystemsettings.desktop and systemsettings.desktop. The Exec properties are changed, with modified LANG environment variables. "nohup" and "&" are appended to the beginning and end of the Exec command. I have also tried removing nohup. The following error message is given before the application launches: `KDEInit: Cannot start "/bin/sh"`

Here is a sample Exec line from one of the .desktop files (they are identical):
Exec=english systemsettings5 &

Here is the "english" command:
#!/bin/bash

eval 'LANG=C "$@"'

Here is a line to the original issue: https://github.com/psifidotos/Latte-Dock/issues/374

A snippet of output from a comment on the issue regarding kdeinit5 in sharper specificity:

kdeinit5: opened connection to :0
kdeinit5: Got EXT_EXEC '/bin/sh' from launcher.
kdeinit5: preparing to launch '/bin/sh'
kdeinit5: PID 5518 terminated.

Exhaustive output and more detailed context can be found by following the comments on the aforementioned issue. 
The exact iso used to write my installation of KDE: neon-devedition-gitstable-20170321-1047-amd64.iso
Below are command output dumps.

Output of "uname -a":


Linux cm-lx-pc 4.8.0-46-generic #49~16.04.1-Ubuntu SMP Fri Mar 31 14:51:03 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux


Output of "kdeinit5 --version":


Qt: 5.7.1
KDE: 5.33.0


Output of "plasmashell --version":


QStandardPaths: XDG_RUNTIME_DIR not set, defaulting to '/tmp/runtime-root'
plasmashell 5.9.4


Output of "qtdiag":


QStandardPaths: XDG_RUNTIME_DIR not set, defaulting to '/tmp/runtime-root'
QStandardPaths: XDG_RUNTIME_DIR not set, defaulting to '/tmp/runtime-root'
Qt 5.7.1 (x86_64-little_endian-lp64 shared (dynamic) release build; by GCC 5.4.0 20160609) on "xcb" 
OS: KDE neon Developer Edition [linux version 4.8.0-46-generic]

Architecture: x86_64; features: SSE2 SSE3 SSSE3 SSE4.1

Environment:

Features: QT_NO_EXCEPTIONS QT_NO_ZLIB

Library info:
  PrefixPath: /usr
  DocumentationPath: /usr/share/qt5/doc
  HeadersPath: /usr/include/x86_64-linux-gnu/qt5
  LibrariesPath: /usr/lib/x86_64-linux-gnu
  LibraryExecutablesPath: /usr/lib/x86_64-linux-gnu/qt5/libexec
  BinariesPath: /usr/lib/x86_64-linux-gnu/qt5/bin
  PluginsPath: /usr/lib/x86_64-linux-gnu/qt5/plugins
  ImportsPath: /usr/lib/x86_64-linux-gnu/qt5/imports
  Qml2ImportsPath: /usr/lib/x86_64-linux-gnu/qt5/qml
  ArchDataPath: /usr/lib/x86_64-linux-gnu/qt5
  DataPath: /usr/share/qt5
  TranslationsPath: /usr/share/qt5/translations
  ExamplesPath: /usr/lib/x86_64-linux-gnu/qt5/examples
  TestsPath: /usr/tests
  SettingsPath: /etc/xdg

Standard paths [*...* denote writable entry]:
  DesktopLocation: "Desktop" */root/Desktop*
  DocumentsLocation: "Documents" */root/Documents*
  FontsLocation: "Fonts" */root/.fonts*
  ApplicationsLocation: "Applications" */root/.local/share/applications* /usr/local/share/applications /usr/share/applications
  MusicLocation: "Music" */root/Music*
  MoviesLocation: "Movies" */root/Videos*
  PicturesLocation: "Pictures" */root/Pictures*
  TempLocation: "Temporary Directory" */tmp*
  HomeLocation: "Home" */root*
  AppLocalDataLocation: "Application Data" */root/.local/share/QtProject/qtdiag* /usr/local/share/QtProject/qtdiag /usr/share/QtProject/qtdiag
  CacheLocation: "Cache" */root/.cache/QtProject/qtdiag*
  GenericDataLocation: "Shared Data" */root/.local/share* /usr/local/share /usr/share
  RuntimeLocation: "Runtime" */tmp/runtime-root*
  ConfigLocation: "Configuration" */root/.config* /etc/xdg
  DownloadLocation: "Download" */root/Downloads*
  GenericCacheLocation: "Shared Cache" */root/.cache*
  GenericConfigLocation: "Shared Configuration" */root/.config* /etc/xdg
  AppDataLocation: "Application Data" */root/.local/share/QtProject/qtdiag* /usr/local/share/QtProject/qtdiag /usr/share/QtProject/qtdiag
  AppConfigLocation: "Application Configuration" */root/.config/QtProject/qtdiag* /etc/xdg/QtProject/qtdiag

File selectors (increasing order of precedence):
  de_DE unix linux neon

Network:
  Using "OpenSSL 1.0.2g  1 Mar 2016", version: 0x1000207f

Platform capabilities: ThreadedPixmaps OpenGL WindowMasks MultipleWindows ForeignWindows NonFullScreenWindows NativeWidgets WindowManagement SyncState RasterGLSurface SwitchableWidgetComposition

Style hints:
  mouseDoubleClickInterval: 400
  mousePressAndHoldInterval: 800
  startDragDistance: 10
  startDragTime: 500
  startDragVelocity: 0
  keyboardInputInterval: 400
  keyboardAutoRepeatRate: 30
  cursorFlashTime: 1000
  showIsFullScreen: 0
  showIsMaximized: 0
  passwordMaskDelay: 0
  passwordMaskCharacter: U+25CF
  fontSmoothingGamma: 1
  useRtlExtensions: 0
  setFocusOnTouchRelease: 0
  tabFocusBehavior: Qt::TabFocusBehavior(TabFocusAllControls) 
  singleClickActivation: 0

Additional style hints (QPlatformIntegration):
  ReplayMousePressOutsidePopup: 0

Theme:
  Available    : generic
  Styles       : Fusion,Windows
  System font  : "Sans Serif" 9

Fonts:
  General font : "Sans Serif" 9
  Fixed font   : "monospace" 9
  Title font   : "DejaVu Sans" 12
  Smallest font: "DejaVu Sans" 12

Palette:
  WindowText: #ff000000
  Button: #ffefebe7
  Light: #ffffffff
  Midlight: #ffcbc7c4
  Dark: #ff9f9d9a
  Mid: #ffb8b5b2
  Text: #ff000000
  BrightText: #ffffffff
  ButtonText: #ff000000
  Base: #ffffffff
  Window: #ffefebe7
  Shadow: #ff767472
  Highlight: #ff308cc6
  HighlightedText: #ffffffff
  Link: #ff0000ff
  LinkVisited: #ffff00ff
  AlternateBase: #fff7f5f3
  NoRole: #ff000000
  ToolTipBase: #ffffffdc
  ToolTipText: #ff000000

Screens: 2, High DPI scaling: inactive
# 0 "HDMI-1" Depth: 24 Primary: yes
  Geometry: 1920x1080+1280+0 Available: 1920x1054+1280+26
  Virtual geometry: 3200x1080+0+0 Available: 3200x1054+0+26
  2 virtual siblings
  Physical size: 710x400 mm  Refresh: 60 Hz Power state: 0
  Physical DPI: 68.6873,68.58 Logical DPI: 85,85 Subpixel_None
  DevicePixelRatio: 1 Pixel density: 1
  Primary orientation: 2 Orientation: 2 Native orientation: 0 OrientationUpdateMask: 0

# 1 "VGA-1" Depth: 24 Primary: no
  Geometry: 1280x1024+0+28 Available: 1280x1024+0+28
  Virtual geometry: 3200x1080+0+0 Available: 3200x1054+0+26
  2 virtual siblings
  Physical size: 376x301 mm  Refresh: 75 Hz Power state: 0
  Physical DPI: 86.4681,86.4106 Logical DPI: 85,85 Subpixel_None
  DevicePixelRatio: 1 Pixel density: 1
  Primary orientation: 2 Orientation: 2 Native orientation: 0 OrientationUpdateMask: 0

LibGL Vendor: Intel Open Source Technology Center
Renderer: Mesa DRI Intel(R) Q45/Q43 
Version: 2.1 Mesa 12.0.6
Shading language: 1.20
Format: Version: 2.1 Profile: 0 Swap behavior: 0 Buffer size (RGB): 8,8,8