Affects Version/s: Minecraft 16w32a, Minecraft 16w32b, Minecraft 16w33a, Minecraft 16w35a, Minecraft 16w36a, Minecraft 16w38a, Minecraft 16w39a, Minecraft 16w39b, Minecraft 16w39c, Minecraft 16w40a, Minecraft 16w41a, Minecraft 16w42a, Minecraft 16w43a, Minecraft 16w44a, Minecraft 1.11 Pre-Release 1, Minecraft 1.11, Minecraft 16w50a, Minecraft 1.11.2, Minecraft 17w06a, Minecraft 17w14a, Minecraft 17w15a, Minecraft 17w16a, Minecraft 17w16b, Minecraft 17w17a, Minecraft 17w17b, Minecraft 17w18a, Minecraft 17w18b, Minecraft 1.12 Pre-Release 1, Minecraft 1.12 Pre-Release 2, Minecraft 1.12 Pre-Release 3, Minecraft 1.12 Pre-Release 4, Minecraft 1.12 Pre-Release 5, Minecraft 1.12 Pre-Release 6, Minecraft 1.12 Pre-Release 7, Minecraft 1.12, Minecraft 1.12.1 Pre-Release 1, Minecraft 1.12.1, Minecraft 1.12.2 Pre-Release 1, Minecraft 1.12.2 Pre-Release 2, Minecraft 1.12.2, Minecraft 17w43a, Minecraft 17w43b, Minecraft 17w45b, Minecraft 17w46a, Minecraft 17w47a, Minecraft 17w47b, Minecraft 17w48a, Minecraft 18w01a, Minecraft 18w03b, Minecraft 18w16a, Minecraft 18w22a, Minecraft 1.13-pre1, Minecraft 1.13-pre2, Minecraft 1.13, Minecraft 1.13.1-pre1, Minecraft 1.13.2, Minecraft 18w48a, Minecraft 18w48b, Minecraft 18w49a, Minecraft 19w03b, Minecraft 19w03c, Minecraft 19w07a, Minecraft 19w12b, Minecraft 19w13b
Fix Version/s: None
As of since at least 18w49a, the boss bar does not show up if your render distance is below a certain value, dependent on your distance to 0/0, which can cause trouble if you don't know that when testing for this bugpost.
It was not the case in an older snapshot version.
This does apply to naturally spawned as well as summoned (via commands) dragons, even if you're in their direct vicinity.
See also this comment
4a) When I tested boss bars in the first 1.11 snapshot, I noticed that only one EnderDragon has got a Boss Bar.
When I summoned a second dragon with the command
it didn't have any boss bar, also after relogging into the world.
Are we not going to have several boss bars for several bosses?
When all dragons in The End are dead and I use
(the new summoned dragon moves and) it still doesn't have a boss bar rightaway.
Upon relog the command-summoned dragon does have a boss bar again.
I also tested DragonPhase:3 and 7, all did not get me a dragon with a rightaway-boss bar.
4b) Dragons in the Overworld don't have a boss bar even upon relog.
It'd be great for the mapmakers to have dragons display their boss bar also in the Overworld, not only in The End, if possible code-wise.
If not, we'd be restricted to EnderDragon boss bars only in The End and could solely be using Wither Bosses in other dimensions.
(I think this is technically a new bugpost?
I can't find an issue regarding that (something like: "summoned Dragon (via command) does not have boss bar in the Overworld, only in The End"), but I'm unsure if I shall post it or if a bugpost like that is already existing. For now I added it here, if no such bugpost exists and I shall make a new one, please tell me.)
Side note: a CUSTOM NAME does work for EnderDragons in the Overworld, it shows up above them in the Overworld, just not as boss bar.
In The End the dragon does have a boss bar with its name, even if there are other Dragons in another dimension, e.g. the Overworld.
Attached pics for proof, dragon in The End as well as Overworld are both in the same worldsave (and alive at the same time).