Starting in 1.9, worlds installed through mctemplate have multiplayer always enabled

Partner Rank:

2

Partner Team Reporting:

Pathway Studios

Verification builds and Platforms:

1.10.0.7 RC2 (Minecraft-Release_UAP_x64_1846015) 

Summary:

When a world has multiplayer disabled in the settings and is installed through either a mctemplate or through the marketplace, multiplayer gets enabled again. Using a mcworld, or copying the world directly into the worlds folder works as intended.

Impact:

Causing maps that don't support multiplayer to fail for players when they log in with multiple players. Also causing Content Review issues as they are failing single-player only maps because they are seeing multiplayer enabled incorrectly.

Repro Steps:

• A
  1. Download and run the world named test_mp_issue.mcworld
  2. Go to the world settings -> multiplayer
  3. Observe multiplayer is turned off
• B
  1. Download and run the world named test_mp_issue.mctemplate
  2. Create a new world from that template
  3. Go to the world settings -> multiplayer
  4. Observe multiplayer is turned on
• C

1. 1. Download Lucky Block Escape from the Marketplace
   2. Click "create this world"
   3. Go to the world settings -> multiplayer
   4. Observe multiplayer is turned on

Observed Results:

In Repro(A) multiplayer is properly disabled

In Repro(B) multiplayer is incorrectly enabled

In Repro(C) multiplayer is incorrectly enabled

Expected Results:

**In all three repro scenarios, multiplayer should be disabled

Screenshot/Video?

**n/a

Regression Builds:

Seemed to have stopped working in beta of 1.9

Notes:

Installing a world shouldn't change the settings of that world.