Unreal Engine Issues
Unreal Engine Issues
Planar reflections do not work in OpenGL4
UE - Rendering - Architecture - RHI - Jul 11, 2017This is not a regression as it occurs in 4.16.2 The test case was just recently updated to test for planar reflections so not sure if this is intended to work or not. ...
InstanceData->SetInstance crash when transforming InstancedStaticMesh
UE - Graphics Features - Nov 13, 2017When updating InstanceStaticMesh transform from C++ or BP, UpdateInstanceTransform then FStaticMeshInstanceBuffer::UpdateInstanceData gets called. Sometimes InstanceData->SetInstance in FStaticMeshI ...
Material Instance changes are not propagating to layers.
UE - Graphics Features - May 25, 2021Please note, during this repro, when I attempted to change the colour of the layer_inst using the colour wheel, it would not save the updated colour. This may be a separate bug. ...
Mobile Previewer: Safe Zone Invalid Until Window Resize
UE - Platform - Mobile - Jul 12, 2021When the Mobile Previewer loads, the Safe Zone widget is not working properly at startup, and requires a window resize to update to the correct Safe Zone. ...
'Open Help Url' on the 'DocumentaionLink' in templates leads to a private Youtube playlist from 4.8
UE - Content - Template - Mar 7, 2022'Open Help Url' on the 'DocumentaionLink' in templates leads to a private Youtube playlist from 4.8 instead of more recent documentation or updated videos. ...
VulkanStagingBuffers stat continually to grows.
UE - Platform - Mobile - Oct 24, 2025On Android phones, VulkanStagingBuffers continually grows when the scene is static. From looking at FStagingManager, it appears the VulkanStagingBuffers atat is only updated on buffer acquisition, ...
Motion warping doesn't enable if a target is added on frames subsequent to the start of the warp notify
UE - Anim - Gameplay - Nov 18, 2025The issue is that URootMotionModifier_Warp::Update will disable the warp if there is no target found for it. But there's no functionality to turn the warp back on if a target is then set on a later ...
Pose assets do not snap to the pose when Additive is disabled
OLD - Anim - Oct 24, 2016This is a regression from 4.13.1 as it was snapping to the pose then. If this was an intentional change please let us know and we can update the test case to reflect this. ...
Setup.sh can fail on Ubuntu server
UE - Platform - Linux - May 3, 2017update-desktop-database (desktop-file-utils package) may not be installed (and it is not installed by default on servers). Setup.sh fails in that case currently. ...
A version of UnrealVS for VS2019 is not included with the Engine
UE - Foundation - Cpp Tools - UnrealVS - Apr 18, 2019Version 4.22 of the Engine includes initial support for Visual Studio 2019. However, an updated version of UnrealVS for VS2019 is not included in the Engine. ...