When returning to the main menu from a world that uses resource packs, the main menu text can overlap the Mojang Studios loading screen as it fades either in or out. It does not happen in older versions such as 1.14.
The bug may be due to the panorama overlay removal from 20w14a that continues toward later versions and snapshots.
- Extract the world file below into the saves folder for better reproduction.
- Enter the world to load the server resource pack for the bug.
- Exit the world to display the Mojang Studios loading screen.
→ The main menu text overlaps the loading screen as it fades both in and out.