A licensee has reported that gaining focus of a UE4 game window by clicking the window's title bar results in the game only receiving keyboard input and no mouse input until you also click in the game's window.

Regression?: No
This also occurred in 4.13

Steps to Reproduce
  1. Create a new project based off of the Third Person Template
  2. Launch the project on Windows
  3. After the game launches, alt-tab to another window
  4. Click on the game's title bar
    Result: The game gains keyboard control but does not have mouse control until you click in the game's window.
    Expected: The game gains keyboard and mouse control

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Affects Versions4.
CreatedJan 18, 2017
ResolvedJan 16, 2020
UpdatedJan 21, 2020