1.7.6: connecting client garbles mouse buttons on Windows server

[NicApicella]

Server: Synergy 1.7.6 on Windows 7 (64-bit)
Client: Synergy 1.7.6 on Mac OS El Capitan (10.11.4)

Since upgrading the server from 1.7.5 to 1.7.6 whenever the client connects, the keybinding I set on my Logitech mouse (a thumb-button set to "CTRL-W"; set through SetPoint Control Center 6.67.83) stops working correctly. (Other bindings, such as doubleclick, work fine; double-checked that it's not the button itself.)
The command "CTRL-W" doesn't work at all—sometimes, though, the CTRL-key gets stuck (with all the obnoxious side-effects that creates).

Current workaround: Fire up Synergy on the server, stop it, then restart it. Everything works fine afterwards.
The error arises again when disconnecting and then reconnecting the client.

Issue was not present with 1.7.5 as a server.

(Currently figuring out minimal reproduction steps and how to generate relevant log-files.)

[xhou-wavefin]

@NicApicella
Duplicate to #4493. I have moved your comment in to #4493.

[NicApicella]

@XinyuHou
I thought of adding my comment to that particular bug as well before opening a new one. On the other hand, this issue has arisen for me since upgrading from 1.7.5 to 1.7.6 on the server (Windows 7 64-bit). Never had any issues like that before. (Haven't gotten around to it, but I'm thinking of downgrading back to 1.7.5 in hopes of fixing it…)

[xhou-wavefin]

@NicApicella
Give 1.7.5 a try, sometimes bugs are random

[NicApicella]

@XinyuHou I can confirm: The issue isn't present with 1.7.5. Must be something that has been touched since; at least in my case. (Still think it's wise to merge the issue with a – probably – unrelated one?)

[JonathanNEMRY]

Hello is there anything new with this issue? Or a workaround to avoid restarting computer? thanks