I have noticed that if you surround your bed in half slabs, it will obstruct your respawn point at the bed, causing you to end back up at the world spawn instead of your bed when you die or leave the end etc.
Linked issues
duplicates
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violine1101
Thank you for your report!
We're actually already tracking this issue in MC-79649, so I resolved and linked this ticket as a duplicate.
However, that ticket has already been resolved. That means that this is not considered a bug and won't be fixed. Please do not leave a comment on the linked ticket.
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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