Khelpcenter menu does not work (some parts of TreeView not expanded)
Package: khelpcenter version 5.7.3
KDE Frameworks Version 5.51.0
Qt Version 5.11.1
KDE Plasma Version 5.13.90
Kernel Version 4.15.0-34-generic
OS Type: 64-bit
NAME="KDE neon"
VERSION="Developer Edition"
ID=neon
ID_LIKE="ubuntu debian"
PRETTY_NAME="KDE neon Developer Edition"
VERSION_ID="18.04"
HOME_URL="http://neon.kde.org/"
SUPPORT_URL="http://neon.kde.org/"
BUG_REPORT_URL="http://bugs.kde.org/"
PRIVACY_POLICY_URL="https://www.ubuntu.com/legal/terms-and-policies/privacy-policy"
VERSION_CODENAME=bionic
UBUNTU_CODENAME=bionic
On 2018.09.26, an upgrade was made by command dist-upgrade.
Incorrect to works the contents index tree on left half of application window (TreeWidget) khelpcenter.
STEPS TO REPRODUCE BUG
0. Open «System Settings» (systemsettings5) → Input Devices → Mouse → General → Choose «Double-click to open files and folders» (!!!)
- Start khelpcenter (in any way).
- Choose menu item - "Kinfocenter Modules" - in the left half of the application window.
- Choose "Memory" in the right half of the application window.
- Look on the left half of the application window.
- Choose «KinfoCenter» menu item in the left half of the application window.
- The corresponding help is not displayed in the right half of the application window.
- Similarly with other submenus of «KinfoCenter Modules» -> ... .
OBSERVED RESULT
- User uses - Double-click to open files and folders.
- Start khelpcenter.
- Pressing some of the menu items does not produce any results (the corresponding help information is not displayed in the right half of the application window). For example - look at "STEPS TO REPRODUCE BUG".
EXPECTED RESULT
Menu should work correctly:
- all menu items should be displayed,
- subparagraphs should open and disclose subtrees,
- the corresponding help is displayed in the right half of the application window.