There was recently a bug fix (sorry, I couldn't find the initial bug) to have Kickoff reflect the filters enabled and disabled from the "Plasma Search" configuration window. It was working briefly, but it's not working any longer. I can confirm this on multiple machines. Reproducible: Always Steps to Reproduce: 1. Go to Plasma Search 2. Enable & Disable desired search filters 3. Open Application Launcher and type to search Actual Results: Results show up regardless of what was selected in Plasma Search Expected Results: Should only show results based on what is enabled/disabled in Plasma Search. Bug submitted while using KDE Plasma 5.5.4 on Antergos (Arch) Linux x64, kernel 4.4.1-2 ARCH.
I can also confirm this issue on Kubuntu 15.10 with KDE Plasma 5.5.4 via kubuntu-ppa/backports.
*** This bug has been marked as a duplicate of bug 358881 ***