Touchscreen stuck in grabbing

Hi everyone,
i have an surface pro 5, when i use kdeneon (stable) and i tap on the dolphin-button on the taskbar with the touchscreen, sometimes (if i am moving a millimeter) i see a grabbing hand (drag drop).
To get that lost i have to tap on the touchpad on the keyboard but i cant change that with the touchscreen.
Is it possible to turn of draggin with the touchscreen?