Fluid containers transform into empty buckets when used to add lubricant to CVT Unit

[lee321987]

So far I've found two items that show this bug:
-- The "Universal Fluid Cell" from IndustrialCraft 2 mod.
-- The "Tank" from Openblocks mod.

When either of these containers is filled with lubricant and you right-click the CVT Unit the lube goes into the CVT, but the lube container is replaced by an empty bucket.

If you have a stack of Universal Fluid cells filled with lubricant and you right-click a CVT you lose the entire stack of containers and lube.
The Openblocks Tank has a 16 bucket capacity -- when you do this 15 buckets of lube just disappear.