This is different bug from https://bugs.kde.org/show_bug.cgi?id=342929 and others I've found in similiar or by keywords.
Summary is, I have a touchpad that is set up via .sh script on every startup of my system.
This touchpad is set up like this:
neko@mars : ~/bin
 % grep Scroll touchpad.sh
Negative VertScrollDelta property is responsible for reversing the scrolling direction (what is called "Natural Scrolling" in MacOS environment).
Problem is, this setting is, for some reason, ignored in Konsole. When I scroll in the Konsole window, it always scrolls in unreversed direction, no matter what synclient setting and/or system settings setting do I have.
Proper steps to reproduce:
1) get a touchpad
2) $synclient VertScrollDelta=-111
3) have a Konsole window with scrollbar
A thing to note is that scrolling through shell history is performed in same un-reversed way. Not sure how this feature is called, this happens when scrolling Konsole window is unscrollable (for example, after creating new konsole tab) - instead of doing nothing, one scrolls through his shell's history.
It turned out that problem persists only for existing Konsole windows, e.g. script with configuration needs to be executed before starting Konsole.
*** This bug has been marked as a duplicate of bug 355755 ***