To reproduce:
1. Open the attached project
2. Build for iOS with Profiler attached
3. Build with Xcode to iOS device
4. Open Profiler window
5. In the Profiler window, select "Memory"
6. Change mode from "Simple" to "Detailed"
7. Click "Take Sample"
8. Expand "Scene Memory" -> "Texture2D"

Actual result: Texture is using 1MB (when Graphics API Metal) or 1.5MB (when Graphics API OpenGLES)
Expected result: Texture should use ±0.75MB (786KB) of memory

Reproduced using:
iPad Mini 3 (iOS 8.4.1)
iPhone 6+ (iOS 8.0)