Due to the conversion of the template manager to .ui (see http://cgit.freedesktop.org/libreoffice/core/commit/?id=b29c078c7f193dd7dae74baf89fe1abb9264239c) this behaviour appeared.
How to reproduce:
1) Open LibreOffice
2) Open Template manager (click on 'Templates' in the startcenter) or (ctrl+shift+N)
3) Hit the 'Search' button
4) Type some text
Behaviour: the existing templates, which doesn't match the search terms are still visible
Expected behaviour: if a search term is entered: hide all non-matching templates
Created attachment 93754 [details]
CurrentView (3 templates on the top) and search view (1 template on the bottom) visible
Joren De Cuyper committed a patch related to this issue.
It has been pushed to "master":
fdo#74782 search view doesn't hide local view when searching first time
The patch should be included in the daily builds available at
http://dev-builds.libreoffice.org/daily/ in the next 24-48 hours. More
information about daily builds can be found at:
Affected users are encouraged to test the fix and report feedback.