Created attachment 117093 [details]
screenshot of systemsettings5 showing a search of "Cursor" and a search of "cursor"

SUMMARY

When I am trying to search in systemsettings5 I get different results depending on capitalization. This seems to affect tree view and icon view, but not side bar view.


STEPS TO REPRODUCE
1. Pick either tree view or icon view in systemsettings5

2. Search for something e.g. "cursor," take note of the results

3. Search for the same thing but with a letter capitalized (e.g. "Cursor")

OBSERVED RESULT
In the first example you will see Personalization > Applications > Launch Feedback
In the second you will see Appearance > Workspace Theme > Cursor Theme and Hardware > Input Devices > Mouse


EXPECTED RESULT
Both searches will reveal all three options (This is what happens in sidebar mode)


SOFTWARE/OS VERSIONS
Windows: 
MacOS: 
Linux/KDE Plasma: 4.19.8-1-default
(available in About System)
KDE Plasma Version: 5.14.4
KDE Frameworks Version: 5.53.0
Qt Version: 5.12.0

ADDITIONAL INFORMATION

openSUSE Tumbleweed 20181219