Unreal Engine Issues
Unreal Engine Issues
Streaming Multiple Instances of the Same Landscape Actor All Have the Same GUID
UE - LD & Modeling - Terrain - Landscape - Apr 15, 2019If a level contains a landscape actor, and if you stream multiple instances of that level into your map, you will get errors in the message log that the landscape actors have the same GUID. Found i ...
Editor crashes when adding a parameter to a material when using Forward Shading and DX12
UE - Graphics Features - Apr 24, 2019Setting the default RHI for Windows to DX12 and enabling Forward Shading results in a crash when adding a texture sample parameter to a material. Found in 4.22 CL# 5660361 and 4.23 CL# 6074473 Wor ...
When a Texture Object is used for the "Tex" Input of a Texture Sample node in a material, the material will no longer contribute to indirect lighting when used with Stationary Lights
UE - Graphics Features - Apr 26, 2019When a Texture Object is used for the "Tex" Input of a Texture Sample node in a material, the material will no longer contribute to indirect lighting when used with static lighting. Working as expe ...
The Perspective grid Z Fights with meshes placed in world (regression)
UE - Graphics Features - Jan 12, 2017The editor grid will zfight with meshes that intersect the grid in the 3d viewport. Creates and unpleasant experience while working with the grid turned on. Repro: 1. Launch Editor 2. create new ...
A WaterBody blueprint class with an added component will not compile if Blueprint Nativization is enabled
UE - Graphics Tools - Terrain - Water - Nov 23, 2021This is Not a regression. Tested in: //UE4/Release-4.26.2 CL15973114 Binary - Reproduced //UE4/Release-4.27.1 CL17735300 Binary - Reproduced When adding a component to a Water Body actor it should ...
CaseIssues with Korean input in Window 11
UE - Editor - UI Systems - Jun 14, 2023When entering Korean in the EditableBox on Windows 11, the two Korean characters after pressing the Space key are not entered. I confirmed that it occurs in UE5.1 and UE5.2, and it does not occur i ...
Performance issue with the material dock
TM - Tools - Oct 1, 2025See video. Tested on 2025.2 In a project where you have a lot of materials, it take a long time to open the material dock. Here around 20 seconds. And that's at each time you want to enter it. Y ...
Float Curve evaluation may yield completely wrong results due to floating-point precision issue
UE - Anim - Runtime - Oct 31, 2024Note: This is possibly related to [Link Removed]. For some inputs, function UE::Curves::WeightedEvalForTwoKeys() inside file "CurveEvaluation.cpp" can incorrectly return the value of the first key, ...
Physics are inconsistent between PIE and Standalone
UE - Simulation - Physics - Apr 16, 2015A user has found that they are seeing differences in how objects are affected by physics in Stand alone as apposed to PIE. While testing the amount of force applied to an object in the different pla ...
EQS Query Not Detecting Different Floors
UE - AI - Jul 7, 2016Running an EQS for something such as finding a random point on a grid will not generate results on multiple floors. See the attached screenshot for an example. Was unable to reproduce in 4.11.2 d ...