Mouse jumping horizontally on Mojave

[ColesyM 1]

I upgraded to Mac OS Mojave, and now suddenly the mouse jumps right (occasionally left) about 10% of the screen width.

It jumps on both the Mac host and Windows client. If I never open synergy on the server, there is no jumping.

This is not a stutter/delay/lag, its a big jump of the mouse position disproportionate to the input.

There is nothing printed in ~ console when this happens.

[Nick Bolton 403]

Does restarting help? Sometimes Synergy detects the screen size incorrectly.