I play at a server which uses IC² BC RP
I got a quantum suit.
I was going to recharge my quantum helmet.
I used shift-click on it to remove from my head, it dropped on ground.
I was unable to pick it.
I used BuildCraft obsidian pipe to pick it and send to chest.
This is what happened...
after that helmet dropped on ground due BC overflow and it stopped replicating.
Server Mods:
Bukkit
IndustrialCraft² (1.337b) [the bug happened with me on 1.23 also]
BuildCraft (all parts)
RedPower (all parts)
Power Converters
Advanced machine tempfix by CPW
Edit: Probably happened due bukkit messing with damage on items causing them to be unpickable, i forced pickup with Buildcraft so it got even more messed. [I think]
Please someone confirm if this is caused by bukkit