I was on my realm and i locked a farmer villager's trades and even got it to level 3. When I placed some beds down it changed into a librarian even though its composter wasn't moved. The villager even kept its levels.
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[Mod] OcelotOnesie
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Thank you for your report!
We're actually already tracking this issue at MCPE-62080, 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 to see if the issue has already been mentioned.
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