Unreal Engine Issues
Unreal Engine Issues
"On List Selection Changed" Retrieves The Wrong Item When "Set Item Selection" is used.
UE - Editor - UI Systems - Jan 8, 2020When a list view item in UMG is selected using "Set Item Selection" it will get the item of the first entry in the list or the last entry manually selected by the user. The correct item display nam ...
VR Template Project Doesn't Create SteamVRBindings Config Folder
UE - Platform - XR - Jan 8, 2020When creating a basic VR Template project, setting the default map to Motion Controller map and exporting a Win64 build their is no SteamVRBindings config folder. I tested this with a Vive Pro and ...
Downloaded Megascans assets cannot be accessed while offline
TM - Core - Mar 30, 2026Reported in SF [Link Removed] When launching and using Twinmotion 2025.2 or 2026.1 offline, the Megascans library becomes unusable due to the subfolders of the 3D assets, 3D plants, Surfaces and De ...
Sphere Mask ArgInvHardness missing multiplication
UE - Rendering - Architecture - Materials - Jun 27, 2025Hi Epic, In MaterialExpressions.cpp UMaterialExpressionSphereMask::Compile(), hardness is not calculated the same way in both <if> conditions. One is missing a multiplication by 0.01f. Specificall ...
Importing a t3d filetype will cause a crash
UE - Editor - Content Pipeline - Import and Export - Jun 15, 2016!!! Changes between version 4.12 and 4.13 for importing these !!! 4.12 There is a crash when importing any t3d (legacy) file through File > Import Into Level using the t3d file option. 4.13 The ...
360 videos with precipitation will get darker at times
TM - Rendering - Sep 19, 2025Reported in SF [Link Removed] When exporting 360 videos with precipitation, there may be a noticeable darkening effect in the exported render that fades in and out. This effect is not present in th ...
Server RPC with struct param containing class reference does not pass parameter
UE - Networking - Apr 2, 2018Class ref is not passed to server within the struct in UE 4.19. Instead, the default value is passed to the server. LogNetPackageMap: Warning: SanityCheckExport: CacheObject == NULL. NetGUID: 1, Ob ...
Fbx importer can import valid under 30Hz anim at 30Hz
Tools - Jul 17, 2017The samplerate of a track was compute with the following formula Equation 1: number of Key / animation Time This formula work only if we have animation keys that are time equidistant. example of ...
Scalar Parameter versus Constant placed in Alpha of LERP produces inconsistent results in Blendable
UE - Graphics Features - Jun 8, 2015When placing a Scalar Parameter into the Alpha position of a LERP you will not get the same results as placing a Constant Value when used in a Post Process Material. Constant Value of 0: [Image Rem ...
Kinematic in Physics Asset Overrides Bone Scale of Skeletal Meshes
UE - Simulation - Physics - Oct 7, 2020In a character's Physics Asset, a bone that is set to Kinematic and its children will have a scale of 1 overriding the Skeletal Mesh's Scale Transform settings. When the root of the body is changed ...