I don't know if this is the place to put this since I'm using ender's client, but since it seems fairly well endorsed by the community and widely used, and I can't find any other place to tell anyone about it -- I'm putting it here.
If this isn't the place, my apologies, and disregard.
Anyway -- enders client. Timers. If you set a timer and log off, you log back in and the timer says its been done for a million years. The value is somehow overflowed or underflowed, the timer is gone, and that's that.
Renders the feature practically useless except for trivial things like setting a bough pyre or cooking some fish wraps.
Can't set a timer for localized resources unless they're going to be available sometime in your current play session which is frankly never.