ok, I was testing something to make a trap, I put honey under a cauldron and filled it with lave, this is to stop players from jumping out, but when I went in with fire res, I started taking fire damage, I did this a couple of other times with friends and it had the same effect.
Thank you for your report!
We're tracking this issue in MCPE-65962, 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