@glyndonwrote: For me (Ubuntu 17.10), the fix was to turn off the "show mouse pointer location when Ctrl key pressed." I had to use dconf-editor to locate that setting, as Ubuntu no longer includes it on the regular settings dialog panel. (in dconf-editor: org/gnome/settings-daemon/peripherals/mouse) This drove me bs crazy. This solultion worked for me. Thanks.
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