The 2 previous bug fixes that were released have made my game unplayable because errors would occur and crash my game, as a result of these crashes i lost 3 of pets they just disappeared so i did what i could to fix the issue and the crashes atopped, but they continued after the most recent bug fix, this time the result of it was losing every mob/pet or animal i had at my base after 2 years of playing. this was my first ever world and just like that a majority of what i worked for is gone? i am very upset.
Related issues
Comments

Thank you for your report!
We're tracking this issue in MCPE-21416, so this ticket is being resolved and linked 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.
Quick Links:
📓 Bug Tracker Guidelines – 💬 Community Support – 📧 Mojang Support
📓 Project Summary – ✍️ Feedback and Suggestions – 📖 Game Wiki