Bukkit

What steps will reproduce the problem?
1. I successfully connect plate with chest (cca 20blocks between)
2. I warp to spawn (1000 blocks away = out of sight).
3. When I get back, plates are "collecting items" but they won't appear in chest.

What is the expected output? What do you see instead?
Pressure plate should collect items, but they just disappear instead. Only sometimes when I drop any other item that plate hasn't collected yet, they appear in chest but with empty slots between different items.
For example: I use plate to collect eggs. There are about 16 stacks of eggs. But when I get back from spawn, eggs just disappears on plate and when I drop stone, it will appear on 19th slot (2 empty slots between eggs and stone).

Do you have an error log of what happened?
- no.

Please provide any additional information below.
Config with plates and connections seems slow (after a few minutes I still can't find any records there.

Can not reproduce the problem yet.

May be fixed by something I changed lately