On Plasma 5.2.2 with QT 5.4.1 (using Kubuntu 15.04 64-bit) if I try to set up the Caps Lock key as an additional Hyper Key modifier in Advanced Input Devices settings/keyboard settings, the key ends up acting exactly as if it were a Meta ("Win") key when using it in custom shortcuts in Plasma5/Kde applications, thus preventing me from accessing an additional and useful layer of possible custom keyboard shortcuts.

Reproducible: Always


Actual Results:  
Hyper modifier acts as a Meta modifier in Plasma5.

Expected Results:  
The Hyper modifier key should act as such, be untied from other modifier key. 

In addition to this, ideally one should be able to set up Left/Right modifiers to act as if they were separate modifiers. It appears that Plasma5 treats them as if they were the same exact keys (for example, no distinction between left and right control). This could be related in part to the Hyper key issue.