When using an input axis for a task such as moving a character, losing focus on the standalone window while holding the key does not stop the axis from firing, which means the character will continue to move even though the key is released.

This can be fixed only by pressing Shift+F1 on the standalone window. Any other button presses or actions do not stop the movement input from firing.

Found in 4.10.2 binary. Reproduced in 4.11 Preview 5 binary and Main CL 2870013

Steps to Reproduce

1. Open the editor
2. Create a third person template project
3. Play in Standalone
4. Hold W to move forward
5. Alt+Tab to move focus to a different window
6. Alt+tab to regain focus on the standalone window

Result: Character continues to move forward even though the key is released.

Expected: Losing focus would stop the input from firing.

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ComponentUE - Editor - UI Systems - Slate
Affects Versions4.104.114.12
Target Fix4.12
Fix Commit2857603
Release Commit2879330
CreatedFeb 17, 2016
ResolvedFeb 19, 2016
UpdatedMay 6, 2016