When adding a mob (in my scenario, a slime) to a team (in my case, it has the settings of noCollision set to pushOwnTeam, no other special settings), and then unloading the area, it loses the team. It does not lose NBT, however, because the slime is still invisible, and still has it's name. Adding the team again results in the same.
Related issues
Comments


I did search. I could not find that one, despite searching.
Thank you for your report!
However, this issue is a Duplicate of MC-89610.
If you have additional information, please add it to that report.
Please search before reporting, as it's likely that one exists already.
Quick Links:
📓 Issue Guidelines – 💬 Community Support – 📧 Customer Support – 📖 Game Wiki