When I put a lectern and a villager walk on there, my lectern disappears.

Hi!
Thank you for your report! 

We're already tracking this issue at MC-163637 , so I will resolve and link this ticket as a Duplicate. 

I suggest also to browse through the main issue for potential fixes. 

If you would like to add a vote and any extra information to the main ticket it would be appreciated. 

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