How to reproduce:
1. Create a new project
2. Go to File-> Build Settings-> Switch to iOS Platform
3. Open Player Settings-> Splash Image-> Legacy Launch Images
4. Scroll to iPhone 6.5 Landscape and inspect it

Expected: iPhone 6.5 (2688x1242px) Lanscape
Actual: iPhone 6.5 (828x1792px) Lanscape

Reproducible with: 2019.1.4f1, 2019.2.0b3, 2019.3.0a3

Note: iPhone 6.5 resolution is added in 2019.1.0a6

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Fixed in 2019.3.0a11