In the latest snapshot the mercy period was removed, meaning that damage is done as fast as people can click at another person rather than limited to a certain speed.
This makes no sense given the developer's stated aims to remove spam clicking.
I recorded a clip of the bizarrely fast attack speed
https://youtu.be/ONj_aFU8_Lg
Edit: I've learned that this applies to other forms of damage as well.
Steps to reproduce:
1: log into a multiplayer server in 16w04a
2: go into survival mode and find some lava
3: jump in.
Or
1: log into a multiplayer server and spam click at another player.
2: observe nearly every hit land, faster than possible in 1.8
Linked issues
is duplicated by 6
MC-96296
Player takes void damage too quickly
Resolved
MC-96352
Taking damage in the void is now faster.
Resolved
MC-96687
Player takes void damage to quickly.
Resolved
MC-97203
getting damaged to fast by cactus,lava and fire
Resolved
MC-97221
getting damaged to fast by cactus,lava,fire and suffocating in blocks
Resolved
Comments 10
The mercy period that prevents players from taking damage too quickly which has been around for a VERY long time is missing. I'm not talking about a problem with the windup mechanic added in the 1.9 snapshots.
Ah it seems I misunderstood. If I now understand correctly you are referring to the half second of damage immunity after taking damage.
Evidence: https://youtu.be/ONj_aFU8_Lg
This also causes lava to apply huge amounts of damage nearly instantly along with other forms of damage. Fire works more quickly as well.
According to @unknown this should be fixed now because "Player entities ticking twice on servers" got fixed in pre-4.
He tested it successfully with lava damage.
Can anyone confirm other damages, e.g. void?
Unable to confirm. Quickly attacking with weapons does less damage than waiting the cooldown shown.