Unreal Engine Issues
Unreal Engine Issues
Expandable Area does not respect scrollbox boundaries unless set to fill
UE - Editor - UI Systems - Dec 13, 2017There is an issue where Expandable Area does not respect scrollbox boundaries unless set to fill. This occurs when the scrollbox is a child of another component. This issue does not appear to be a r ...
FHLSLMaterialTranslator::GetMaterialEnvironment can crash or not load UMaterialParameterCollections
UE - Rendering Architecture - Materials - Apr 30, 2025In UE 5.5, the Editor may crash in FHLSLMaterialTranslator::GetMaterialEnvironment when loading materials with Material Parameter Collections, likely due to async loading. Calling ParameterCollectio ...
Landscapes do not render on PowerVR device
UE - Platform - Mobile - Sep 2, 2016When using a level with a landscape on an Android Device with a PowerVR gpu the landscape is not rendering. This was reproduced with Asset# 4719Model: Galaxy S4 GT-19500GPU: PowerVR SGX544MP3OS: 4. ...
Blueprint variables get reset if not made Public
UE - Gameplay - Sep 5, 2018When a blueprint variable is not set to Instance Editable, its value gets reset at runtime. This seems to occur because the variable OriginalCannonTransform seems to get reset/nullified after being ...
GoogleARCoreJavaHelper functions are not correctly exported publicly
UE - Platform - XR - Oct 31, 2018The jni functions in GoogleARCoreAndroidHelper.cpp are not correctly exported, when we tried to build a Test project it failed with this exception: java.lang.UnsatisfiedLinkError: No implementatio ...
BuildGraph XML Errors Logged Incorrectly
UE - Foundation - Horde - BuildGraph - Aug 30, 2019Suggested fix from licensee: After investigation, it seems that the filename is passed as a string instead of a FileReference in Script.cs:84. Fixing the issue seems to be as simple as changing th ...
Cloth jitters in Movie Render Queue renders when temporal sampling is enabled
UE - Anim - Sequencer - MRQ - Dec 6, 2022The Cloth simulation time step smoothing is interfering with the substepping fix for multi Temporal Samples by changing the very variable DeltaTime and causing some large errors in the cloth simulat ...
Node MinimumAreaRectangle produces wrong centerpoint
UE - Gameplay - Feb 15, 2019The centerpoint for the MinimumAreaRectangle function returns the wrong value when applied. Tested in 4.21.2 (CL - 4753647), 4.22 (CL - 4958263) ...
LOD materials are wrong for multiple tree static meshes in Kitedemo
Docs - Samples - Nov 10, 2016A lot of the tree meshes become big and blocky at the furthest LOD level. This causes them to look odd when they are far away in the distance. This is a regression from 4.13.2 ...
Clicking on an Actor in the World Outliner jumps to Details tab if it is docked with the World Outliner
Tools - Dec 20, 2017When clicking on a actor in the World Outliner while the Details tab is docked to it, it switches over to the Details tab. This bug was not present in 4.17.2 but is in 4.18 and 4.19. ...