@MojangSupport Getting the stuck at 66% like many others on Nintendo Switch. This only happens on the main user, I have tried deleting and reinstalling, the airplane mode restart... nothing works.

We apologize for the inconvenience, as this is currently a known issue. Please complete our request form at bit.ly/3uO21ER so that one of our technical specialists can look further into this issue for you. ^FF

There's a bug where if you enter the Nether, a mob can kill you while you're in the Nether loading screen. The only way to fix this is to remove the nether loading screen. What!? It's just gonna look like the nether chunks are slowly loading. Like in how it does in java edition.