I was playing in my hardcore world as normal and when I went to bed(in game) and woke up I got instantly killed by a zombie, I was in my fully lit up house and had full health.
And now when I want to spectate the world I only see the clouds and a blue void.
Thank you for your report!
We're actually already tracking this issue in MC-157812, so I resolved and linked this ticket as a duplicate.
If you would like to add a vote and any extra information to the main ticket it would be appreciated.
If you haven't already, you might like to make use of the search feature in the future to see if the issue has already been reported.
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