lolad

Seems to affect other entities (like snowballs), not just armour stands

I can confirm, 1.17.1.

They're sorted alphabetically.

I think this works as intended, does the bucket you're holding contain water? You can only pick up mobs in if the bucket already contains water.

Cannot reproduce the lag; I profiled 3 times - 10 seconds of standing still, then 10 seconds of trampling crops, then another 10 of standing still. I got tps of 192, 240, and 234 respectively, so there was no decrease there.

Can confirm

Can confirm, especially visible when using a fire aspect sword - I was not set on fire

Can confirm

I don't quite get what you mean - do you mean when you mine a block, it disappears? If so, then that's intended behavior, you mine the block to remove it. It should drop its item on the ground.

— since the client only sends a packet

I would hope you didn't expect the client to send 64 packets when you do this; it could be fixed by just sending a different/changed packet.

Slightly misleading title, "resetting" implies you're setting it back to 3 from another speed. Also, setting your random tick speed to 30000 is an incredibly bad idea in terms of lag

Did you actually enable the datapack? Could you send a screenshot of what happens when you run /datapack list?

There's not really enough information here, could you add some steps to reproduce or a world upload?

Hi, please don't make two issues for the same problem (you made MC-223943 too).

This is not how selectors work; you must specify a dy too to make the field actually matter. See the wiki.

Not F2, but F1. F2 will take a screenshot; F1 toggles hud display.

Duplicate of MC-929

This isn't a bug. However, you can change your username once every 30 days; if you just changed it and put the wrong one you'll have to wait another 30 days.

Related (/duplicate) to MC-223150

Could you provide the seed and coordinates of where you took that screenshot?