Icon Taks in Plasma 4 had an awesome mode which allowed to raise all windows of a window group with single left click. This behavior worked extremely well with my workflow using lots of partially overlapping non-fullscreen windows. 

Unfortunately this feature is gone in the Plasma 5 version. Instead one gets the present windows effect, which look nice, but is cumbersome to use.  One has to search for the correct window since the the windows are displayed in new quasi-random order during this effect.

Please evaluate reinstating the ability to configure the primary mouse action for the task icon. 

Reproducible: Always

Steps to Reproduce:
1. Open multiple windows of the same application
2. Click one the group icon in the task manager


Actual Results:  
Present Windows effect is triggered

Expected Results:  
All windows of the group should be raised.