Can confirm. This is due to the new biome systems along the versions.
I cannot reproduce this. May you share more details?
Can confirm.
This is very likely to be WAI because the toolbars purpose is to save the current toolbar and have you be able to load it. This does mean non-inventory obtainable items. In single player this is definitely working as intended because you can always obtain them in single player.
Now for multiplayer it is a bit more complicated if you are OP it would work the same as in single player as you could obtain them but if you wouldn't be OP things like command blocks, commandblock minecarts, commands on signs and commands on books.
Everything else would be normal as some of them can be obtained without commands like dragon eggs. Also allowing custom enchantments, custom books, custom player heads would not impact the server harmfully and are useful features for many building servers.
Now the fact that commands on books, commands on signs, command blocks and commandblock minecarts can be brought from the toolbar on a multiplayer server with no OP permission is a bug and should be fixed.
Can confirm
Are you sure you are not playing in offline mode?
Please run /debug start before opening the chest then run /debug stop and then run /debug report . Please attach the report from the file location %Appdata%\.minecraft\debug
Iron golems are not supposed to drown see : https://minecraft.gamepedia.com/Iron_Golem#Behavior However they are supposed to avoid water which they do not seem to do and that is a bug.
The zombie villagers, drowned and husks have this behavior as intended as they are considered to just be zombie variants. However with the zombified piglin this is a bug as they should not spawn reinforcements.
I would like this not to be patched as a server owner it makes it easier to transport items. It should be up to the specific server to disable/enable the toolbar validation.
This could be intended to allow breaking of hard to reach blocks.
This is probably intended as magmacubes jump higher than slimes.
This might be intended as mobs will only spawn on full blocks.
This behavior is probably intended.
Can you please provide a video of this
Can someone check if this bug occurs in 20w08a ???
You should make a report on https://bugs.mojang.com/browse/MCL if it is a launcher issue.
There might be a dublicate of this issue. Can someone look for it.
Can confirm for 1.16.3