Unreal Engine Issues
Unreal Engine Issues
Crash when changing r.MaterialQualityLevel when FastGeo plugin enabled in cooked build
UE - World Creation - Worldbuilding Tools - Sep 5, 2025The engine crashes when the r.MaterialQualityLevel is changed in a cooked game that uses the FastGeo Streaming Plugin. The crash doesn't repro with the same steps in Editor, just in a cooked build. ...
5.6 Skeletal Meshes with Disabled Sections Flicker in Ray Tracing Scene
UE - Graphics Features - Ray Tracing - Nov 7, 2025Skeletal meshes with disabled mesh sections will flicker in the Hardware Ray Tracing Scene. Also tested on //UE/Release-5.6, CL:45232827 ...
Drag and Drop fails in Standalone and Packaged builds when WidgetComponent’s Widget is set at runtime
UE - Editor - UI Systems - Dec 4, 2025When a UWidgetComponent has its widget assigned dynamically at runtime using CreateWidget and SetWidget, drag & drop operations fail in Standalone Game and packaged/game builds, while working correc ...
Input Touch Hold trigger fails to reset, unlike Mouse Hold (using Enhanced Input Context)
UE - Gameplay - Input - Nov 13, 2025When using the Enhanced Input Context, the Input Touch Hold trigger does not reset correctly after releasing a touch input. Unlike Mouse Hold, which keeps firing Canceled events as expected, Input T ...
Crash on 5.7 when running with the Vulkan RHI and async compute
UE - Rendering Architecture - RHI - Dec 4, 2025Making this a placeholder for now. Will fill out the description asap ...
In-app purchase fail node does not execute properly without network connection
UE - Platform - Mobile - Sep 30, 2015In-app purchase failure nodes do not execute when there isn't any connection. ...
Sound plays twice when switching camera modes
UE - Audio - Aug 7, 2015Playing a sound (firing weapon) and switching the camera mode will cause the gunfire sound to play twice, once from the weapon's position when it's fired and again as through the sound was coming fr ...
Compile failure in UHT with combined multi-line / single line comments
UE - Foundation - Core - Apr 22, 2015Using a single line comment to immediately follow a multi-line comment closing brace results in an illegible compile errors: "error code: CrashOrAssert(3)" Workaround: Include a space between */ an ...
Crash assigning spline mesh on tiled landscape
UE - LD & Modeling - Terrain - Landscape - Jun 1, 2015Crash assigning mesh to spline on tiled landscape. ...
Editing the value of an Array Variable in an Actor Component's bp Details panel will collapse the expanded array
UE - Gameplay - Blueprint - Mar 27, 2015Editing the value of an Array Variable in an Actor Component's bp Details panel will collapse the expanded array. Found in 4.7.3 but also reproducible in Main 2491982. Another user reporting the i ...