My server is using MC 1.7.10, and there's some bugs present (which were fixed in newer versions). So I decided to grab Vincent Lee's Bugfix Mod (which was never released on CurseForge) and maintain its fork.
Fixes are (as described by original mod's author):
The most annoying thing was the boats desynchronisation bug (MC-2931).
Also I fixed a bug preventing players from sleeping in beds placed above y=128 (MC-3599).
Other stuff was not tested.