Verified bug exists from Chrome in 46.0.2490.80 (Linux 64-bit) on repository tag 'jenkins-1.638' but does not exist on tag 'jenkins-1.628'.
When testing, note that the search does not seem to be broken on the default tab, but is broken on the "Installed" tab. When entering a search term, the list results do seem to change sometimes, but more results are returned than are warranted by the search term.
Results of git-bisect debugging:
3b5424e507be2e59eabfd3f55ce16cd2b58a6195 is the first bad commit
Author: tfennelly <email@example.com>
Date: Fri Sep 25 12:22:46 2015 +0100
Only allow disable or uninstall when all dependants or dependencies are disabled/enabled