Navigating through scene view by pressing and holding arrow keys or fly through keys for 10 seconds, scrolls the scene view continuously even after releasing the key,
refer attached video.

Steps to repro:
1. Create a New Project
2. Select Scene view
3. Press and hold Arrow key (left, right, up, down) or Right-click + WASD, for 10 seconds before releasing the key.

Actual Result:
Scene view moves continuously in the direction of the key pressed

Expected Result:
Scene view stops moving on the key is released.

Workaround:
Mouse click and mouse hover Scene view stop moving.

Reproducible in:
2020.1.0a23, 2020.1.0a22.

Working Fine in:
2020.1.0a21, 2019.3.0f6.

Environment:
Occurs only on macOS 10.15