Icon Task Previews disabled

Netrunner Rolling Rolling 2017.07
1

Icon preview in the taskbar are disabled why in Manjaro are enabled? Can I enable it?

2

These are disabled on purpose.
You would need to turn back on the global hinting setting, as well as group popup setting in the task manager.

3

How can I turn back on the global hinting setting?

4

Open ~.config/kdeglobals and add or change the following:

[Main] ShowToolTips=true