in my situation - keyboard imitated of clicking '1', '2', '3' etc. even if I didn't work on keyboard and mouse for 30 min to several hours. The symbols that were stucked (imitated) didn't repet the symbols I manually typed before. The bug appeared more often when RealVNC server or TeamViewer server worked (and I typed symbols and moved mouse remotely - and VNC server or TeamViewer server received this symbols and mouse movements). Every time then bug began - it repeated from 1 to some hundreds of same symbols - and I every time can stop the bug by pressing any key phisically in keyboard or remotely via VNC server or TeamViewer server (but after such a stopping the bug - it could be begin again after period from 0.5 seconds to some hours).
THE PROBLEM SOLVED in my situation by phisically removing the USB device called 'SkypeMate' (USB-B2K model) (this device connects Skype software on desktop via USB with wire connected to standard office phone device to make calls via it).
in my situation - keyboard imitated of clicking '1', '2', '3' etc. even if I didn't work on keyboard and mouse for 30 min to several hours. The symbols that were stucked (imitated) didn't repet the symbols I manually typed before. The bug appeared more often when RealVNC server or TeamViewer server worked (and I typed symbols and moved mouse remotely - and VNC server or TeamViewer server received this symbols and mouse movements). Every time then bug began - it repeated from 1 to some hundreds of same symbols - and I every time can stop the bug by pressing any key phisically in keyboard or remotely via VNC server or TeamViewer server (but after such a stopping the bug - it could be begin again after period from 0.5 seconds to some hours).
THE PROBLEM SOLVED in my situation by phisically removing the USB device called 'SkypeMate' (USB-B2K model) (this device connects Skype software on desktop via USB with wire connected to standard office phone device to make calls via it).