Affects Version/s: Minecraft 1.13.1, Minecraft 1.14.2, Minecraft 1.14.3 Pre-Release 3, 1.14.4, 1.15.2, 20w06a, 20w12a, 1.16 Pre-release 5
Fix Version/s: None
XP orbs are lagging a lot in 1.13 and 1.13.1 compared with 1.12.2
I asked to some friends test it too, everyone had the same lagging results.
open the attached map (bug xp.zip) in 1.12.2, press F3 to see fps. Press the stone button, counting how many times before your fps going to less than 10.. maibe 1... press wood button to clear xp.
Open the same map in 1.13 or 1.13.1 and do the same... compare the numbers.
or spam a lot of bottle o' enchanting, compare the number of bottles throwed that 1.12.2 can handle compared to 1.13