after upgrading the nvidia drivers from 367.57 to 375.26 I noticed that the mouse pointer often releases a stamp of itself on i3wm’s window decorations after navigating over them (Screenshot).
It happens when the “composition pipeline” is on. I verified it on Kernel 4.7.10 and 4.9 (both from kernel.org). I use the latest version of i3wm (4.13). Also I use DRM KMS with the Nvidia driver.