Unreal Engine Issues
Unreal Engine Issues
Updates to DesiredFocusWidget for a UserWidget are not propagated to existing instances of it inside the WidgetTree of other widgets
UE - AI Workflows - UI Systems - Nov 17, 2025This issue has been reproduced in UE 5.3 to 5.7 and source versions. A repro project is available. Below are the findings from an initial investigation of the problem. Normally, when a UserWidget p ...
OnRep functions do not fire on the client
UE - Networking - Mar 15, 2015OnRep functions do not fire on the client. Reproduced in 4.7.2 binary and Main (//depot/UE4/Promotable-CL-2478413) ...
Struct array of type 'key' dirties blueprint each time it is re-opened
UE - Gameplay - Blueprint - Aug 29, 2016Struct array of type 'key' dirties blueprint each time it is re-opened. Regression (no) issue (does) occur in 4.11.2 ...
Crash when playing a HapticFeedbackEffect_Soundwave
UE - Platform - XR - Aug 30, 2016Array is -1 indexed, causing a crash. Fix is already in Dev-VR. Integrate to 4.13.1 (CL 3106922) ...
Landscape Mode automatically turns on Game View in Viewport
UE - LD & Modeling - Terrain - Landscape - Oct 31, 2016Landscape Mode automatically turns on game view in the level Viewport. Regression (yes) issue (does not) occur 4.13.2 ...
Need to update to libpng for Android; current one triggers security alert on Google Play
UE - Platform - Mobile - Sep 28, 2016We are using libpng 1.5.2 which is triggering this alert from Google on Android apps: [Link Removed] Need to update the library. ...
Using the Clean command in XCode prevents the editor from opening
UE - Platform - Apple - Nov 18, 2015In XCode, if the Product->Clean option is used, the editor from the launcher will not open. Workaround: This can be fixed by running Verify from the Launcher. ...
Unable to go fullscreen in Standalone Game
Tools - Jan 5, 2017Unable to make the Standalone Game window fullscreen with a console command or with Alt+Enter. This is a regression as this was not an issue in 4.14.2. ...
Ensure condition failed: PrimitiveComponent tried to render with Material MaterialInstanceDynamic, which was not present in the component's GetUsedMaterials results
UE - LD & Modeling - Terrain - Landscape - Feb 22, 2017Top 10 ensure in 4.15. There was a fix submitted for [Link Removed] which was verified as following those steps to reproduce no longer causes this. ...
Editor Crashes when creating a function in Child Anim Blueprint
OLD - Anim - Mar 16, 2017Editor Crashes when creating a function in Child Anim Blueprint. Regression: This issue did NOT occur in 4.13.2 Binary build ...