When I apply https://git.reviewboard.kde.org/r/126950/ to fix showing additional search results (docs, etc) my result window for application gets too large http://imgur.com/jl2QP5j and fills the screen. Attached image shows result of searching for "fir"
Cannot reproduce this bug in: Distribution: KDE neon Developer Edition Unstable Branches KDE Plasma Version: 5.10.90 KDE Frameworks Version: 5.37.0 Qt Version: 5.9.1 Kernel Version: 4.10.0-32-generic
Yep, should be fixed.