The default camera will stop tracking the character model whenever they equip a tool with a humanoid is inside it, but ONLY when StreamingEnabled is on.
Repro
Create a tool with a humanoid in it (doesn’t need to have a handle)
StreamingEnabled is on
Equip the tool, the camera will stop following the player.
I have been running into this bug as well, however it appears to trigger when a humanoid is parented to anything under a character at all. I first saw this problem in September 2023. HumanoidBug.rbxl (53.1 KB)
I have also noticed that in streamingenabled, you also cannot see nametags of other humanoids under your character, while without streaming enabled, you can. Maybe this is also related to this bug? It seems unintentional and gets in the way sometimes either way.
With streamingenabled