[MC-140857] Arrows bounce off entities during their invulnerability ticks

The Bug:

Arrows bounce off entities during their invulnerability ticks.

Steps to Reproduce:

Summon an iron golem and give yourself a crossbow enchanted with a high level of quick charge by using the command provided below.
```
/give @s minecraft:crossbow[minecraft:enchantments={"minecraft:quick_charge":5}]
```
Quickly and continuously shoot the iron golem and watch the arrows closely.

Observed Behavior:

Arrows bounce off entities during their invulnerability ticks.

Expected Behavior:

Arrows would not bounce off entities during their invulnerability ticks.

Linked issues

Attachments

MC-140857.mp4

Comments 18

Jon1337 2020-04-18T14:31:33Z

Confirmed in 20w16a

Iosiv Visokogorskiy 2020-07-02T15:19:49Z

this still present in 20w27a?

Jon1337 2020-07-06T13:49:42Z

Affects 20w27a

Avoma 2020-12-25T17:02:42Z

Can confirm in 20w51a. I believe this is because mobs have invulnerability ticks and this prevents you being able to damage them quickly.

FaRo1 2020-12-26T21:00:57Z

I don't think so. The invulnerability is pretty short and this is done with a bow, which needs a minimum charging time to fire an arrow at all.

8 more comments

Avoma 2021-02-01T14:31:40Z

Can confirm in 21w03a.

Howzieky 2021-02-08T20:21:07Z

If you set the nbt of an arrow to {damage:0.0d}, then the arrow will bounce off of the shooter and possibly any other players. It literally cannot hit a player entity. If the damage is not zero, it will behave normally.

Avoma 2021-02-10T14:49:51Z

Can confirm in 21w05a. This is easier to reproduce if you perform this with an iron golem.

Avoma 2021-02-16T19:07:07Z

Can confirm in 21w06a.

Brevort 2021-02-19T20:53:38Z

Can confirm. I shot a skeleton, and it bounced off and hit me 😛

Edit: Also can occur with the player very rarely. A skeleton shot me and the arrow bounced off me and hit him instead for no reason. Is this a separate bug?

TheXug 2021-07-06T18:27:44Z

can confirm in 1.17.1

Avoma 2021-10-19T14:10:11Z

Can confirm in 21w41a. The expected behavior here would be that arrows cannot bounce off mobs during their brief invulnerability period after being damaged.