Tekkit Lite 0.6.5: What is up with liquids?

I have been playing on my Tekkit Lite server lately and have been trying to set up a system that transfers lava via cells. I just found that lava buckets will not place the lava. It will consume the lava bucket rendering an empty bucket. Oddly enough, when you right click the bucket again it will be full. This behavior also happens with water and cells, and cells cannot even pick up fluids. The lava cell will appear in your inventory, but not consume the lava/water block, and as soon as you right click or open your inventory it will become an empty cell. However none of this occurs in singleplayer.

What is happening?