I tried to capture an axolotl in an empty bucket of water, randomly on land as well, I failed, it got caught in the water current, and when I tried to capture it in non-source blocks of water, it made them into source blocks while releasing the axolotl.
Steps to Reproduce:
1. Trap an axolotl on land in flowing water
2. Try to catch the axolotl in an empty bucket
3. The flowing water will be turned into source water, and the axolotl will remain free
Linked issues
Comments

Thank you for your report!
We're tracking this issue in MCPE-40692 and MCPE-44320, 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
-- I am a bot. This action was performed automatically! If you think it was incorrect, please notify us on Discord or Reddit