To reproduce:
1. Open the "TestScene" scene in the attached project
2. Play the scene
3. Right-click several times in different positions on the Game view within Canvas boundaries

Desired outcome: During each click red panel is redrawn in such position that cursor is in the middle of it.
Actual result: Sometimes red panel is late to appear in a new position, although its position values are updated correctly.

Note: The issue appears only when the red panel is a child of the blue panel in the Hierarchy.

Note: The issue is caused by this::gameobject::SetActive(false), which is called in the Selectable::OnPointerExit of the red panel.

Reproduced with 2017.1.0b9, 2017.1.0b10, 2017.1.0f1
Not reproduced with 5.5.4p1, 5.6.2p1, 2017.1.0a1, 2017.1.0b8, 2017.2.0a1, 2017.2.0b1
Regression introduced in 2017.1.0b9
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Fixed in 2017.2, 2017.1.2p4