This bug has been fixed before, it seems to be that it has been added again (accidently)..

Just saying Epic Adrian made his 3 k monster high score when you banned me. By the way my spawner did not have even over 1200 mobs because the systeme I using to stack them was broke. Hmm well actually first of i didn't even spawn over 2000 Mobs, As handy even told me because i asked him what was a...

Yeah.. But couldn't he at least leave it until it was finished and ready to be changed? Because at the moment it's very hard to repair tools, and we need to wait for however long nidefawl takes..

I personally reckon that grinders are a good thing, they show how rich you are by seeing how many spawners you have etc, and also they are for me a little 'gift' for playing long enough to afford them or find some myself therefore I think they should make them at least a little faster