### Known Issues in 2017.4.39f1

*   Asset Bundles: Loading.LockPersistentManager object lock impacts performance during AssetBundle.LoadAssetAsync operation ([827299](https://issuetracker.unity3d.com/issues/loading-dot-lockpersistentmanager-object-lock-impacts-performance-during-assetbundle-dot-loadassetasync-operation))
    
*   iOS: Apps with UIApplicationExitsOnSuspend in info.plist failing to pass Apple Store validation ([1160614](https://issuetracker.unity3d.com/issues/ios-apps-with-uiapplicationexitsonsuspend-in-info-dot-plist-failing-to-pass-apple-store-validation))
    
*   uGUI: RectTransofrm resets it's coordinates to zero when selecting "Apply" on prefab even if no changes were made ([964111](https://issuetracker.unity3d.com/issues/recttransofrm-resets-its-coordinates-to-zero-when-selecting-apply-on-prefab-even-if-no-changes-were-made))
    

### 2017.4.39f1 Release Notes

#### Fixes

*   Android: Fixed on-screen keyboard being closed when focusing different InputField. ([1180393](https://issuetracker.unity3d.com/issues/android-on-screen-keyboard-is-closed-when-focusing-different-inputfield))
    
*   Asset Import: Fixed issue where setting EditorCurveBinding.type to a custom component binds to "MonoBehavior" instead of the derived class. ([1201584](https://issuetracker.unity3d.com/issues/setting-editorcurvebinding-dot-type-to-a-custom-component-bind-to-monobehavior-instead-of-the-derived-class))
    
*   iOS: Fixed an iOS 8 player startup crash in CreateSystemRenderingSurfaceMTL.