Comment 43 for bug 402892

Same problem here.
System: Mint 18.3 with kernel 4.15.0-55-generic
(Problem seems not to be dependent on kernel version. Had this effect with earlier kernel versions too)
Desktop: MATE with lightdm

Reproduction: Open two folders in default file manager of mate. Then drag files from one folder to another folder in a seperate window while pressing the shift key. After ~ 10 files copied the problem occurs.

Reproduction 2: Open a folder and drag and drop files (small .mp4 video clips) from a folder to XPlayer (Medienwiedergabe). Problem occurs after around 10 files or sooner. (VLC seems to run fine though).

Mouse can be moved but klicks do not work. No left, right, middle, scrolling ... nothing. Keyboard works fine. Unplugging and plugging mouse does not help.

How to solve the problem: Reboot. Nothing else worked for me. Monitor has no touch screen. "Gesettings" command did not help. Killing nautilus, file-roller, rapidsvn, nautilus-desktop, nemo is not applicable (but still tried it) and/but did not help too.

During the copy process the default mouse icon changes from normal mouse pointer to this hand symbol with an arrow on the bottom right side pointing to the left top corner and the file icon symbol of the file that was to be copied (grabbed).

Hope this gets fixed soon. The problem began 2009??? Very annoying bug renders the system more or uselesse useless. Reboot is the only fix for me right now. :((