Steps:
1. Open attached project ("TestDeserializationError.zip")
2. Open scene "TestDeserializationError1"
3. Enter Play mode
4. In Game tab, press button "Asynch Load Scene 2"

Expected: no error, the asset is loaded successfully.
Actual: The last asset doesn't display correctly and the console logs an error:
A script behaviour (script unknown or not yet loaded) has a different serialization layout when loading. (Read 32 bytes but expected 44 bytes)
Did you #ifdef UNITY_EDITOR a section of your serialized properties in any of your scripts?
UnityEngine.AssetBundleRequest:get_asset(AssetBundleRequest)
*.AssetLoadOp:get_Asset() (at Assets/External/*/Asset/BundledAssetLoader.cs:200)
*.AssetLoadOp:OnUpdate() (at Assets/External/*/Asset/BundledAssetLoader.cs:254)
*.AAsyncOperation:TickUpdate() (at Assets/External/*/AsyncOperation/AAsyncOperation.cs:18)
*.AsyncOperator`1:TickUpdate() (at Assets/External/*/AsyncOperation/AsyncOperator.cs:35)
*.BundledAssetLoader:TickUpdate() (at Assets/External/*/Asset/BundledAssetLoader.cs:109)
*.Libs.DLC.DLCController:ServiceUpdate() (at Assets/Libs/Scripts/DLC/DLCController.cs:135)
*.Utils.Services.ServicesManager:UpdateServices() (at Assets/Libs/Scripts/Utils/Services/ServicesManager.cs:389)
*.Utils.Services.ServicesUpdater:Update() (at Assets/Libs/Scripts/Utils/Services/ServicesUpdater.cs:148)

Reproduced with: 2017.4.14f1
Not reproduced with: 2018.2.14f1, 2018.3.0b8, 2019.1.0a6 (due to error in the Console)