Well, I agree with you. The fact that is has sharpness doesn't matter at all. There is a bug which happens when you hit a mod and then quickly hit it again, it actually won't take any damage because it was VERY recently hit. BUT even though the mob won't take any damage the sword durability will decrease.
Yeah true
yah just noticed it and I was about to report it.
I am in 1.5.2 and this happened to me too. I don't know if it is exactly the same.
I have 2 droppers facing up both and placed vertically attached to each other. Sometimes the down dropper will move the item to the top dropper but not always. Even if this is not the same as your's, even though I really do think it is, I am voting for a fix.
I can confirm that too. It is really annoying and also it is really difficult to face mobs (especially the 1.6 ones which are harder) without spaming the left click button to hit them rather than* waiting a bit so you know that this will not happen. I am in 1.6.2
*please tell me if rather than is correct, if not tell me what should I have said there so the sentence would be correct. 🙂