To reproduce:

1. Download and open "rotate-test.zip" project.
2. Build application on a device.
3. Run logcat and filter information which Unity outputs.
4. Run the application.
5. Notice in logcat's outputted information that Debug.LogException is shown as "I" (Information).

Expected result: Debug.LogException is shown as "E" (Error).
Actual result: Debug.LogException is shown as "I" (Information).

Reproduced with : 2017.1.0b6, 5.6.1p1, 5.5.3p2, 5.4.5p1

Devices under testing:

Samsung SM G925F (Galaxy S6 Edge), OS:6.0.1, CPU:arm64-v8a, GPU:Mali-T760,
Build:samsung/zeroltexx/zerolte:6.0.1/MMB29K/G925FXXU5DQA7:user/release-keys

Samsung SM G928F, OS:7.0, CPU:arm64-v8a, GPU:Mali-T760,
Build:samsung/zenltexx/zenlte:6.0.1/MMB29K/G928FXXS3BPIA:user/release-keys

Samsung SM G928F, OS:7.0, CPU:arm64-v8a, GPU:Mali-T760,
Build:samsung/zenltexx/zenlte:6.0.1/MMB29K/G928FXXS3BPIA:user/release-keys

Notes: Neither iOS or standalone build logs shows the level of LogException. Everything is as expected when exception is thrown in the editor(it is thrown as an error).

Verified with 2017.3.0a1