Repro steps:
1. Create a new project
2. Add a NavMeshObstacle component to any Game Object in the scene and save it
3. Switch build target to Android and Scripting Backend to IL2CPP
4. Build and run

Actual: App crashes after the splash screen

Reproducible with: 2019.3.0b6, 2020.1.0a8
Not reproducible with: 2017.4.33f1, 2018.4.11f1, 2019.2.8f1, 2019.3.0a7

Tested and reproduced on these devices:
iPhone 8 Plus (iOS 12.0)
VLNQA00012, Samsung Galaxy S6 (SM-G920F), Android 7.0, CPU: Exynos 7 Octa 7420, GPU: Mali-T760
VLNQA00098, Lge LG G4 (LG-H815), Android 6.0, CPU: Snapdragon 808 MSM8992, GPU: Adreno (TM) 418
VLNQA00231, Huawei HUAWEI Mate 20 Pro (LYA-L29), Android 9, CPU: HiSilicon Kirin 980, GPU: Mali-G76
VLNQA00264, Samsung Galaxy S10+ (SM-G975F), Android 9, CPU: Exynos 9 9820, GPU: Mali-G76
VLNQA00052, Xiaomi MI MAX (MI MAX), Android 7.0, CPU: Snapdragon 617 MSM8952, GPU: Adreno (TM) 510
VLNQA00015, Samsung Galaxy Note8 (SM-N950W), Android 8.0.0, CPU: Snapdragon 835 MSM8998, GPU: Adreno (TM) 540

Notes:
- Didn't reproduce on Windows/Mac standalone
- No repro with Mono