If we write some rich text with tags like <b>Text</b>, the tags are hidden, however every hidden character is taken into account when showing Tris and Verts in Statistics window.

Reproduction steps:
1. Open new project
2. Add UI text object (GameObject>UI>Text)
3. Write "<b>Text</b>" in the text field
4. Observe the Tris count in Statistics
5. Check Rich Text checkbox on Text script

Expected result: <b> and </b> tags are hidden and Tris count reduced accordingly
Actual result: <b> and </b> tags are hidden but Tris count stay the same

Reproduced on: Unity 5.5.0b9, 5.4.2f1, 5.3.3f1, 5.2.5f1