Leads duplicate when holding them in the other hand and using them on mobs. When in creative, number of leads will be negative when used on a mob while holding them in the other hand.
Environment
survival/creative
MC-83468
lead, duplication/negative numbers
Resolved
Duplicate
0
Confirmed. Applies to all items
/blocks. Another bug:The lead still connects to right hand even if the lead is used on the left hand