I spawned some zombie horses both using eggs and /summon, but could only see their shadows.
They move, take damage, make noise, and drop items as normal. (Their hit boxes seem about right.)
Spectral arrows do not highlight them, but they do emit particles.
They are replaced with (visible) zombies (not zombie horses) upon reload.
Game output:
Couldn't render entity
java.lang.ClassCastException: java.util.Optional cannot be cast to java.lang.Boolean
at ait.dw(SourceFile:134)
at bxr.a(SourceFile:24)
at cgb.a(SourceFile:147)
at cgg.a(SourceFile:41)
at cgg.a(SourceFile:16)
at cfg.a(SourceFile:362)
at cfg.a(SourceFile:349)
at cba.a(SourceFile:615)
at cau.b(SourceFile:1178)
at cau.a(SourceFile:1086)
at cau.a(SourceFile:944)
at bob.b(SourceFile:822)
at bob.a(SourceFile:382)
at net.minecraft.client.main.Main.main(SourceFile:140)When attacking zombie horses:
Error executing task
java.util.concurrent.ExecutionException: java.lang.IllegalArgumentException: Default value cannot be lower than minimum value!
at java.util.concurrent.FutureTask.report(FutureTask.java:122)
at java.util.concurrent.FutureTask.get(FutureTask.java:192)
at i.a(SourceFile:147)
at bob.b(SourceFile:782)
at bob.a(SourceFile:382)
at net.minecraft.client.main.Main.main(SourceFile:140)
Caused by: java.lang.IllegalArgumentException: Default value cannot be lower than minimum value!
at abi.<init>(SourceFile:21)
at byf.a(SourceFile:1825)
at lf.a(SourceFile:70)
at lf.a(SourceFile:15)
at ic$1.run(SourceFile:13)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at i.a(SourceFile:146)
... 3 moreLinked issues
blocks 1
is duplicated by 33
MC-124339
invisible zombie horses bug when spawned by player
Resolved
MC-124351
Zombie Horse texture isn't showing up & middileclicking them
Resolved
MC-124370
Zombie Horses are invisible
Resolved
MC-124398
Zombie horses wouldn't be seen and have selector issues
Resolved
MC-124414
invisible zombie horses bug when spawned by player
Resolved
Attachments
Comments 12
Done. The shadow one was taken immediately before I logged out. The flaming zombie one was taken immediately after logging back in. (Single player, new world created today in 18w02a)
This issue relates to MC-124114?
I can confirm this. Additionally, while the zombie horse is invisible (except its shadow), you can't select it with entity selectors by type. In other words, using @e[type=zombie_horse] finds nothing, even though zombie_horse is considered a valid ID by Brigadier; but if you try @e[type=!player] or some other non-specific selector, it will be included in the selected entities properly. On the other hand, if you specify the selector as zombie rather than zombie_horse, it targets the horse. (For instance, /kill @e[type=zombie] will kill the invisible zombie horse.)
So somewhere in development, it seems the zombie horse ID has been mismapped to regular zombies (but only in some parts of the code, not all, or else they'd just be zombies all the time). This makes it unlikely to be related to MC-124114.
I can confirm that when using the spawn egg in creative (no mods or resource packs used) I just see a shadow. I switched the time to night and got the same result.
say @e claims that they are zombies, but kill @e[type=zombie] does not get rid of them. So apparently not even the server is sure what they are.
The invisible zombie horse that turns into a zombie after relogging has been there from 18w02a to 18w16a. And it actually spawns in a invisible zombie that you can't see until you relog. Any zombie horses you had before entering the snap shoots, would turn it into a invisible zombie you can't see until you relog.
Agnes Larsson
Please attach screenshots, and make sure no resource packs are loaded.