Unintentional windows drags started

[NeroReflex]

Sometimes, when the mouse is in the upper portion of the screen (on window titlebars) an unintentional drag of windows (mainly fullscreen apps) starts and I have to mouse click to stop the drag and double click to restore the fullscreen.

I am using archlinux, git version of cosmic software. Every cosmic component is installed and I'm using cosmic-freeter.

Edit: I discovered how to trigger it. Do a double click on a window titlebar to fullsize it, then move the mouse horizontally inside the titlebar and drog will unintentionally start.