@Scurge
Hello. I have the same problem on my server. At the same time, there is logging timetracker.lifeupdate
Right now I think some kind of anti-cheat is blocking this feature, but haven't tested it yet. The fact is that you are not the only one with this problem.

I am also having the same issue.

There's a mod called Hydrocraft fixes. I used that and it seems okay. Go look for it.

If you look at the original Hydrocraft, you will notice that there is no Timed folder in lua/server, unlike this build.
timetracker.lua and timetrackerdef.lua must be in the client folder, in which case everything will work in network mode.
I looked at hydrocraft fixes - this is a rebuilt code that fixes a third of what is not working now. I will not say that this is a bad mod, but this is not my way.

So you're saying if those files are moved around manually, things just work nicely?

A fix for this is coming, until then you will need the 'Hydrocraft - fixes' mod by iChindo.

Timers should be fixed as of today's update; ty HC devs!

this problem back again, my silk egg did't transform in silkworm untill i keep it in my inventory. same for planterss with plants, and animals, they don't transform into "hungry" etc.
same for Oak Sprout, they did't transform into Oak Sapling for 20+ ingame days, but should transform into Sapling in 24 ingame hours, and after 14 ingame days should transform into Young Oak, but they did`t