Window title/border missing from package build with resolution changed

When making a packaged game, changing the resolution via the execute console command "r.SetRes 1280x720w" causes the usual border to not appear, this occurs with any resolution using this command (such as r.SetRes 600x400w). This issue does not occur if you use the "set screen resolution" node.

Regression:
This issue does not occur in the 4.15.2 binary build

1. Create a new project (No template or starter content needed)
2. Open Level Blueprint
3. On the event graph Add "Event Begin Play" node, connect to "Execute console command"
4. Set console command to "r.SetRes 1280x720w" (Screenshot_02)
5. Compile the level blueprint, save the project, name the level "TEST"
6. Set TEST as the Game default and Editor startup map in the project settings
7. Package the project and run the .exe
   Result: The .exe will run the game but be missing the border (Screenshot_01)
   Expected result: The border for the window should be present (Screenshot_03)

Window title/border missing when switching from Fullscreen to Windowed mode