I've been having minor lag spikes, I put things in my invent from a chest and it magically poofs back into aforementioned chest, and sometimes I break blocks by accident and when I try to replace them the block I try to place poofs from my invent. ._. It makes me want to flip all of the tables.
Edit: Also, lag just ate two weapons I made, I enchanted them and put them in a chest and they just vanished. :/