I recently decided to mess around with potions on creative. After using the thick potion though, I am no longer able to hit mobs with my hand or other things except for swords, pick axes, axes, shovels, and other tools. This doesn't help me, because I have a mob farm and I don't want to waste my sword on the mobs and just want to punch them...
EDIT: A splash potion of weakness has the same effect, I cannot do anything!
What I expected: I can hit mobs with anything!
What happened: Only tools (swords, shovels, etc.) can damage mobs. ANYTHING ELSE doesn't work.
How to reproduce:
1. Drink a thick potion (splash works too).
2. Attempt to hit a mob with anything but a tool.
Edit: This bug happens on survival and creative.
Linked issues
Comments

Thanks man I really needed a way to remove that issue. Now I can play normally again!
Oh wow yes, I have this on one of my maps and gave up on it. I can't punch mobs with bare hand. I have started a new map and don't want the same bug on it, so will avoid potions for now. I'm playing 0.12.1 Win 10 version on PC.
EDIT I was able to resolve it by drinking a 'Strength 2' potion. Even after the potion has worn off, I can now hit mobs with fists once again.