[kde] [Bug 365450] New: Using the "type to search..." feature on the K menu (application launcher/"start menu") doesn't produce results

[via KDE Bugzilla]

https://bugs.kde.org/show_bug.cgi?id=365450

            Bug ID: 365450
           Summary: Using the "type to search..." feature on the K menu
                    (application launcher/"start menu") doesn't produce
                    results
           Product: kde
           Version: unspecified
          Platform: Debian testing
                OS: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: NOR
         Component: general
          Assignee: unassigned-bugs at kde.org
          Reporter: tukkek at gmail.com

Sorry about not being able to provide the proper version. aptitude tells me I'm
using:

kde-plasma-desktop at  5:90
plasma-desktop / plasma-workspace at 4:5.0.0
kde-base / kde-runtime at 4:4.11.3

If I go to the "About KDE" menu on KTorrent or Amarok it shows 4.14.21.

Anyway I'm using Debian testing with all packages up-to-date as of today.

Yesterday I updated my Debian packages normally and lost the functionality of
the K menu (application launcher) where before the update it would give me
results of applications or system setting modules. For example: if I wrote
"ktor" it would show me ktorrent. If I wrote "composit" it would show me the
Display And Monitor system configuration module (where you can configure
compositing being enabled or not at startup).

If I go to Computer -> System Settings and type "composit" it works fine
(showing me a few drop-down options and highlighting the relevant icon below).

Even if I write the full application name (konsole, for example) it won't
produce results. Even with konsole written and pressing ENTER it also won't
launch the command. KRunner is the same: I can press ALT+F2, write konsole and
press ENTER repeatedly and nothing happens.

Maybe I'm missing a package on my installation? I don't install the full set of
KDE packages from Debian so it could be that the new update is missing a
dependency. If that is the case I'm asking for help identifying which one so I
can open a follow-up bug on the Debian tracker. The application launcher search
feature was working fine before the upgrade yesterday.

If I go to the Search system settings module it show all proper plugins
activated (including Applications and System Settings among several others).
File search is enabled too.

Reproducible: Always

Steps to Reproduce:
Case 1 (ktorrent)

1. Open Application Launcher
2. Where it says "Type to search..." type "ktor" or "ktorrent"

Case 2 (compositing)

1. Open Application Launcher
2. Where it says "Type to search..." type "compos" or "compositing"

Case 3 using KRunner (konsole)

1. Press ALT+F2
2. Where it says "search" type konsole (nothing is shown)
3. Press ENTER to run the command (nothing happens)

Actual Results:  
Case 1: Nothing is shown. Pressing ENTER doesn't launch the application if full
name is specified.

Case 2: the command isn't launched, UI gives no feedback at all / is unchanged.
Doing the same on the System Settings application internal search feature works
as intended.

Case 3: the command isn't launched, UI gives no feedback at all / is unchanged

Expected Results:  
Case 1: show the KTorrent icon with partial or full name provided
(case-insensitive).

Case 2: the respective system setting modules should be shown (depends on how
much of "compositing" your write but the full word should show Desktop Effects
and Display And Monitor).

Case 3: should run the specified command when the full name is given and ENTER
is pressed (should probably show partial matches as a search feature too but
I'm not sure since I never use KRunner / ALT+F2)

Repeating the steps above with the proper case also don't work (KTorrent,
Konsole).

As mentioned above these functions stopped working (as far as I can tell) after
upgrading all my installed packages yesterday via aptitude (apt/apt-get
frontend on Debian). Today I've again upgraded some important KDE packages but
the problem persists, even after a hard reboot to make sure everything is
working as it should.

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