Confirmed for 21w39a
Not specific to just oceans and rivers, grass generates underground in every biome.
Confirmed for 1.17rc-1
More than a couple glowing signs cripple even high end hardware. Confirmed for 1.17pre-4.
Works as intended. You have to right click a candle with a flint and steel to light it.
I suggest you remove the attachments as people like Avoma here go insane at the slightest hint of a client modification. Can confirm for 1.16.5, in a vanilla environment.
Confirmed for 1.16.5 and 21w20a
Can confirm not fixed in 21w20a
Can confirm for 1.16.5. Cats are also unable to breed while in this state.
Even if intentional it's a bad change, the new rendering looks horrible and if this was marked as WAI then it'll just be suggested to be reverted on the feedback site.
WAI
The entity cap is now being shared between both of you and because you're near an isolated farm there will be a lot more valid spawning spaces near them so they'll get most of the mobs
Works as Intended. I advise you read up a bit on how redstone works. What's happening there is the leftmost repeater of the three repeaters on the right is powering a dispenser, which is in turn powering the redstone dust next to it, causing the repeater to power itself.
Cannot reproduce, tried in a fresh 1.16rc-1 world and the portal works fine
Works as intended, luck is the outlier and really should be removed from the creative inventory
Works as intended, you sink 2 pixels into snow to give it a more realistic "snowy" effect
1.12.2 is an unsupported version and this sounds like an issue with your keyboard, not the game.
Because it's the same bug. Blackstone cannot be used as a substitute for stone in all recipes. Exactly which recipes are affected is irrelevant here.
Can confirm for 21w40a