Affects Version/s: 1.15.2 Pre-Release 1
Fix Version/s: 1.15.2 Pre-release 2
1.15.2-pre1 added info about the world/server you're currently playing in to the Minecraft window title. However, when disconnecting from a singleplayer world, the title is always "Mutliplayer (3rd party)"
- Join a singleplayer world
- Look at the window title
→ It says "Minecraft <version> - Singleplayer"
- Exit the world
- Look at the window title again
→ It says "Minecraft <version> - Multiplayer (3rd party)"