while going trough the debug world i went into creative and clicked the comparator at roughly X 106, Y 71, Z 59
i got an instant fps drop and moments later i saw about 9000 comparator items

Steps to Reproduce:
1. get a debug world
2. press f3+n
3. go to the comparator at X 106, Y 71, Z 59
4. press it and behold the fps drop