I wouldn't blame webOS or synergy on this one... something else is wrong. Been using webOS and synergy for 2 1/2 years now over 10 webOS devices, including multiple devices syncing the same cloud accounts at the same time.
I love physical keyboards... but there is two devices that would make me consider a slab, one is something running a full version of Open webOS. The other is an iPhone!!!! HA HA just kidding (about the iPhone that is)...