Note: this probably happens on any version
This happens because you lost some hearts
Happens in Any mode
Reproduce:
Type /effect @p 21 60 1
drink milk
screen shakes like your getting hurt
MC-71829
It is a duplicate :(
Resolved
Duplicate
0
The issue says it was fixed in one if the 1.7.2 snapshots put I got it in 1.7.9.