Modifier keys stuck most of the time

[laino]

Operating Systems

Server: Windows 10 (Version 1709)
Client: Linux (Arch)

Synergy Version

1.8.8-stable-c30301e

Steps to reproduce bug

90% of the time, when moving the mouse connected to the Windows server to the Linux client,
some modifier key (Super, Shift, Alt...) will be stuck. Sometimes it is possible to make the key "unstuck"
by pressing it on the keyboard.

Might be related to being in some fullscreen application on Windows when you move the mouse to the screen border to switch desktops.

[xhou-wavefin]

Duplicate of #4493