Hi major77,
I can confirm we see the same behaviour in testing. It appears iCloud’s Document syncing feature is linked to Back to My Mac’s underlying process, which Viscosity disabled while connected. We spent a solid two days trying to see if we can work around needing to still disable this under Mac OS 10.9, with no luck.
Instead we’ve added an “Disable Back to My Mac while connected (recommended)” option under Preferences->Advanced to the latest beta version. Turning off this option should allow Documents & Data to sync while connected again. However BTMM is known to cause both DNS and IP assignment issues, so if you find your connection is not working correctly (even if you have turned off BTMM in the iCloud settings area) you may need to consider turning it back on.
The latest beta version can be downloaded from:
https://www.sparklabs.com/forum/t/beta-latest-build-of-viscosity-for-mac/46/1
Cheers,
James