Same problem here.
First it wouldn't let us download because we had to clear up more memory. After clearing up the memory it would download the realm (326mb), then crash once complete.
Tried re-initializing the Nintendo Switch and re-downloading everything. Still, it would do the same thing when trying to download a realm.
Having the same problem. Not sure how to re-open this ticket.
We are using Bedrock/Switch/Realms Plus and when we place a balloon, it just sticks to the ground. Same for Ice Bombs, they just stay in place, not moving.