Unreal Engine Issues
Unreal Engine Issues
DDC corruption creates incorrect pasted topology when using Landscape Copy / Paste Tool
UE - LD & Modeling - Terrain - Landscape - Apr 3, 2017I noticed that the copy and pasted section of the level was being painted while I was painting a nearby section of the level. This weird yellow color appeared and I undid and redid the paint to make ...
FBX Import for Skeletal Meshes normals not correct
UE - Graphics Features - Jan 12, 2016When importing a mesh as skeletal mesh and using any of the MikkTSpace or option to "Import Normals and Tangents" will cause the normals to import incorrectly. If using the Compute Normals or Import ...
EPixelFormat::PF_R16_SINT does not render correctly for textures
UE - Rendering Architecture - RHI - Nov 18, 2019Creating a UTexture2D the following way does not properly process gradients in the texture: ------ bool Atexture_test_actor::LoadRawFileTest( /* output */ UTexture2D*& image) { TArray<short> v ...
Actor moves between levels when using Convert Actor
Tools - Jan 9, 2017Using Convert Actor when the wrong level is selected can cause the actor to move levels. This doesn't seem to happen with every actor type but is 3/3 reproducible using the steps provided. User Des ...
Clicking the tutorial button in the Blueprint editor while the tutorial alert in the main editor is still displayed will crash the editor
Tools - Jul 13, 2015Clicking the tutorial button in the Blueprint editor while the tutorial alert in the main editor is still displayed will crash the editor. Reproduced in 4.8.1 and Main (//depot/UE4/Promoted-CL-2605 ...
Landscape Textures Patches issue when using "Texture Backed Render Target" as the Height Patch Source Mode where Landscape patches are not applying properly the first time a level is opened after restart
UE - Graphics Tools - Terrain - Landscape - Oct 6, 2025Context: Landscape patches are components that can be attached to meshes to affect the landscape as the mesh is repositioned. Problem: The problem is that when using "Texture Backed Render Target" ...
[CrashReport] UE4Editor_Slate!FDelegateBase::Unbind()
UE - Editor - UI Systems - Slate - Jul 24, 2017This is a common crash affecting users in 4.16. User Descriptionstrying to import a texture D: Source Context 137 /** 138 * Unbinds this delegate 139 */ 140 ...
Startup Movie renders as a black screen on some Android devices
UE - Platform - Mobile - Jun 29, 2018While testing on the 10661_Xiaomi Mi 5C the Startup Movie would occassionally render as a completely black screen while still playing the audio from the Startup Movie sample. This was the most consi ...
Forward Rendering shading flicker on some assets set to Static
UE - Graphics Features - Jan 18, 2017When forward shading is enabled some assets will have a shadow flicker along their face geometry. It has a similar look of z-fighting with polygon faces. This issue does not happen in Deferred rende ...
Destructible Meshes that are fractured while using moving will rest and then move the whole components fractures as a whole
UE - Simulation - Physics - Destruction - Nov 26, 2014DESCRIPTION: When a destruction mesh has been setup to move to a location or use a lerp if it is destroyed the components will fall, come to a rest, and then the entire destruction destruction mesh ...