Unreal Engine Issues
Unreal Engine Issues
Enabling windows animation causes dropdowns to glitch up and down.
UE - Editor - UI Systems - Nov 18, 2021Observe dropdowns glitching up and down when enabling Windows Animation in editor preferences. This is not a regression due to it occurring in 4.26.2 ...
Typo in water body ocean materials parameter
UE - Graphics Tools - Terrain - Water - Nov 18, 2021In Water_Material_Ocean material, there is a typo under FluidSimulation that says "Siulation Flowmap Speed" This is not a regression due to it occurring in 4.26.2. ...
Volumetric fog rendering gets cut off at the apex for some spot lights when viewed from certain angles
UE - Rendering - Architecture - Apr 19, 2023Fix is found in licensee’s pull request:https://github.com/EpicGames/UnrealEngine/pull/10333/files ...
FStateTreeExecutionContext::GetDebugInfoString() outputs wrong info and crashes when using linked state trees
UE - AI - Debugging - Apr 17, 2025When using State Trees, the AI Debugger can be accessed during play to show information about their current execution state. If a behavior tree is currently in a state that references a linked tree, ...
Updates to DesiredFocusWidget for a UserWidget are not propagated to existing instances of it inside the WidgetTree of other widgets
UE - Editor - 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. ...