In Synergy 1.4.16 you can hold down two modifier keys (e.g., Shift and Command) simultaneously.
In 1.4.17 the second modifier key supersedes the first, so if you hold down Command and then Shift, it releases Command.
This is verified using the keyboard viewer from system preferences.
Is this a known bug? Is there a work-around; i.e., a way to get two modifier keys to be in effect simultaneously?