To reproduce:
1. Create a new project
2. Create and select cube
3. Rotate view that x axis would be in the front
4. Zoom out in the scene view

Expected: transform handle's x axis arrow will be in the center of visible cube wall
Actual: arrow is showed closer to bottom left corner( images attached)

Reproduced: 5.5.3p4
Not reproducible: 5.6.1p2, 2017.1.0b7, 2017.2.0a2

Regression introduced in 5.5.3p1

Note: this issue is not reproducible when scene view tab is in separate window