Health boost resets the additional health every 30 seconds.
Steps to reproduce:
/effect <player> 21 300 2
Wait for health to regenerate naturally
At every 30 seconds the additional hearts are empty again
Linked issues
discovered while testing 1
is duplicated by 25
Attachments
Comments 15
His last filter, "AddAttribute", apply it on a chest where your armor/item is.
Download link : http://sethbling.com/media/5308/addattribute.py
Confirmed. This only happens in 13w26a.