Unreal Engine Issues
Unreal Engine Issues
Widget defaults not updated when modified on a base widget class via the hierarchy
UE - Editor - UI Systems - UMG - May 3, 2023A licensee has reported an inconsistency in how modified base widget class defaults are propagated to children. When modified via the UMG Designer Graph's Class Defaults, derived classes will be mar ...
Unexpected corrections when sliding against other characters
UE - Gameplay - Player Movement - Oct 19, 2023We are seeing unexpected movement corrections sometimes when pushing one player character up against another character that isn't moving, or against other static primitives that have round features ...
Updating Material does not update platform stats in derived Instance
UE - Rendering Architecture - Materials - Nov 26, 2024It would seem that updating a material does not update the associated platform stats in a material instance editor, only the parameters. Can workaround by manually invoking shader compile in the ma ...
Skylight Leaking Tint in Reflection
UE - Graphics Features - Oct 10, 2025From 5.6 onwards, Skylight Leaking is much stronger in reflections than in the world. Also tested on //UE5/Release-5.6, CL 45232827 ...
Packaging a project to HTML5 and opening the project disables mouse over events
UE - Platform - Mobile - Dec 24, 2015Packaging a game to HTML5 disables the mouse and mouse over events on local host, which prevents any mouse functionality from working in a packaged project. ...
Destructible attached with a Physics Constraint ignores Start Awake on play
UE - Simulation - Physics - Destruction - Jul 26, 2016Destructible attached with a Physics Constraint ignores Start Awake on play The Destructible component is set to simulate physics, but on play physics is not simulated unless the destructible is to ...
When welding a procedural mesh component to a non-physics simulated static mesh that overlap they collide continuously
UE - Simulation - Physics - Jul 18, 2019When attaching a Procedural Mesh Component with a copied static mesh to a static mesh component the two meshes collide and "push" each other (go flying on play). Weld is to be used for simulated ph ...
"Out of video memory" crash when attempting to save many assets with source control enabled
UE - Graphics Features - Sep 25, 2020This will only repro when connected to source control ...
Blueprint class's property is overridden by parent blueprint class
UE - Gameplay - Components - Nov 2, 2020I did some research. The problem is caused in CoreNative.cpp. In Function GetInstancedSubobject (Line 126) We should check if instance is runtime instance first. If it is runtime instance, just us ...
Anim Curve Data Does Not Appear in Montages When Using Animation Modifier, MotionExtractorModifier
UE - Anim - Runtime - Apr 28, 2022Occurs 5/5 times Regression does not occur as the MotionExtractorModifier appears to be new with UE5. Curve data is not displayed in an Animation Montage when Animation Modifier, MotionExtractorM ...