The bug
I don't know if this is really a bug, but I expected that this would not happen as you would see then the Armor Stand.
When a Marker Armor Stand falls on the ground it creates these ground particles. I did not expect this, because Marker Armor Stand won't burn in lava.
How to reproduce
Fly above an area and use this command
/summon armor_stand ~ ~ ~ {Marker:1b}
Linked issues
relates to 2
Comments 21
Is this still an issue in the latest snapshot 16w44a? If so please update the affected versions.
This is an automated comment on any open or reopened issue with out-of-date affected versions.
Confirmed for 1.12.1.
Note: This does not happen if the ArmorStand (no matter the set Marker-tag) lands onto a barrier-block.
I cannot test this bug, as (at least since 19w06a) Marker-true-armor stands do not fall anymore upon summoning; they simply stay ar the summoned location, as if a NoGravity-tag would have been applied alongside of it. although running an entitydata (data get entity) at that armor stand does not yield any information about any set NoGravity-tag.
Searching here on Mojira I found this comment by developer Mr. Bok: https://bugs.mojang.com/browse/MC-143069?focusedCommentId=517152&page=com.atlassian.jira.plugin.system.issuetabpanels%3Acomment-tabpanel#comment-517152
An armor stand which is Marker:1b doesn't collide with a block > "after internal discussion we decided to fix it by assuming that Marker:true implies NoGravity:true"
I'm currently not sure if this bugpost here should be left open, even if Marker-true-armor stands could still produce particles, it can't be tested for anymore, in case the change regarding NoGravity-true for Marker-true armor stands is not just a temporarily change, if the Devs (want to) find a way to fix those AS falling through blocks in the future, which is unbeknownst to me.
According to developer Mr. Bok, it seems unlikely that marker-true-AS will have gravity again, as that change doesn't seem to break irreplaceable functionalities.
I also asked on Twitter, and 91er was so kind to ask in the according discord server, and it seems to be that there is indeed no one who would be negatively impacted by it.
Thus I suggest to resolve/close this bugpost.
Don't know if it is intended that way, but I can definitely confirm that behavior. It is also still like that in 1.10.
The won't burn in lava-thingy is actually kinda interesting. According to the NBT data of a marker-ArmorStand standing in lava, it is actually burning (Fire:301s). Probably it just doesn't know where to render the fire animation.