I'm not playing Snapshot versions as of now, but that doesn't surprise me. As they're snapshots and Mojang actually do warn you about possible issues with them (as they are kind of beta versions, and beta versions usually aren't the most stable stuff there is).
Snapshots are what they are. When you start snapshot, you should actually be expecting to come across some issues.
Yeah expect crashes and bugs with snapshots, that's the nature of the beast. If you get a repeatable crash with a crash report, send it to the Mojang bug report site, that's what it's there for and why they have snapshots in the first place.
Don't play snapshots on a regular world that you want to keep.
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