To reproduce:
1. Open user's attached project
2. Open "scene" and hit play
-- Notice that errors are being logged into the console with this stack trace:

UnityEngine.Debug:LogError(Object)
debugview:ShowTimeInLog() (at Assets/debugview.cs:16)
debugview:Update() (at Assets/debugview.cs:25)

3. Build this scene to iOS (IL2CPP backend) and play on the device
4. Inspect Xcode's console and notice this stack trace:

UnityEngine.DebugLogHandler:LogFormat(LogType, Object, String, Object[])
UnityEngine.Logger:Log(LogType, Object)
UnityEngine.Debug:LogError(Object)
debugview:Start()

Expected result: Xcode's stack trace should match the stack trace from the Editor because Editor's one shows the correct information.

Reproduced with: Unity 5.6.5p1, 2017.3.1p1, 2018.1.0b7, 2018.2.0a1
Device: iPhone 7+ iOS 10.3.2

No repro with Mono backend.