Logging in on a server shows "Stevie joined the game" no matter which username is chosen in settings

What I expected to happen was...:
Chat should have shown "bilde2910 joined the game", as is set in Settings.

What actually happened was...:
Chat showed "Stevie joined the game".

Steps to Reproduce:
1. Start a world on a device (iPhone tested)
2. Log in to this world on another device (iPad tested here)
3. Chat showed "Stevie joined the game" after connecting.