[MC-78473] Mobs don't panic when hit with a summoned or dispensed potion of harming

The Bug:

Mobs don't panic when hit with a summoned or dispensed potion of harming.

Steps to Reproduce:

Build the setup shown in the attachment below.

[media]

Obtain a potion of harming and place it inside the dispenser.
Summon a cow on the diamond block.
Activate the dispenser and observe the cow's behavior.
Take note as to whether or not mobs panic when hit with a summoned or dispensed potion of harming.

Observed Behavior:

Mobs don't panic.

Expected Behavior:

Mobs would panic.

Linked issues

relates to

MC-44280 Entities don't receive knockback from projectiles fired from dispensers

Attachments

MC-78473.mp4

Comments

Tan Chin Cheern 2015-03-09T11:36:14Z

Can confirm.

Sonicwave 2015-03-17T03:34:08Z

Can confirm as well; they don't seem to take knockback either.

Sonicwave 2015-05-25T19:05:30Z

Confirmed for 1.8.6.

wobst.michael 2016-10-20T21:30:34Z

Is this still an issue in the most recent versions (i.e. 1.10.2, or 16w42a) of Minecraft?

Mike M 2016-12-29T22:22:05Z

This appears to still be an active issue in 1.11.2. The command has changed due to Minecraft's updated entity handling, but the overall problem remains.
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Updated command:
/summon potion ~ ~5 ~ {Potion:{id:"minecraft:splash_potion",Count:1,tag:{Potion:"minecraft:harming"}}}
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I've also tried adding in various combinations of the "ownerName" and "UUID" tags to see if that solved the problem, to no avail:
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/summon potion ~ ~5 ~ {ownerName:USER,Potion:{id:"minecraft:splash_potion",Count:1,tag:{Potion:"minecraft:harming"}}}
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/summon potion ~ ~5 ~ {UUIDLeast:0L,UUIDMost:1L,Potion:{id:"minecraft:splash_potion",Count:1,tag:{Potion:"minecraft:harming"}}}
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/summon potion ~ ~5 ~ {UUIDLeast:0L,UUIDMost:1L,ownerName:USER,Potion:{id:"minecraft:splash_potion",Count:1,tag:{Potion:"minecraft:harming"}}}
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(Sorry about the strange spacing, I can't seem to get the formatting to look decent)