delete_all_material_expressions_in_function Doesn't delete all expressions in one go.

UE - Rendering Architecture - Materials - May 24, 2024

UDN: https://udn.unrealengine.com/s/case/500QP000009NxNBYA0/deleteallmaterialexpressionsinfunction-doesnt-delete-all-expressions-in-one-go?fromCase=1 A UDN user is reporting that the delete_all_mat ...

Enable HDR Display Output on Game User Settings Crash

UE - Graphics Features - Jun 14, 2018

Crash when attempting to enable HDR via UserSettings This crash will also occur when project is fullscreen. User's Environment: "I have an Nvidia GTX 1080 Ti and have two monitors attached: 1. ...

Syncing changes in multi-user editing tool results in crash

UE - Virtual Production - Tools - Multi-user - Dec 18, 2019

When using the multi-user editing tool inside a 4.24 project, persisting changes will sometimes result in a crash.  Unable to reproduce the issue. However, the user has reported occasionally re ...

ObjectPivotPoint does not work with instanced Nanite meshes

UE - Rendering Architecture - Materials - Nov 17, 2022

Regression: Nanite Foliage is a new feature in 5.1, so this issue is not reproduceable in 5.0. Notes about this new support can be found under Nanite Improvements in https://docs.unrealengine.com/5. ...

"Support Compute Skincache" throws an Assert for games on Linux

UE - Graphics Features - Apr 16, 2019

After enabling "Support Compute Skincache" in the project settings and packaging a game on Linux, the packaged game will throw an assert. Any setting that turns "Support Compute Skincache" on automa ...

Single Frame Blendspace doesn't sample root motion

UE - Anim - Runtime - Jul 26, 2021

Single Frame Blendspace nodes don't correctly sample/generate root motion. The reason for this is because of how we calculate the delta to bump the sampling within the blendspace each frame. In a ...

Rename BP in Content Browser causes actor to not load in WP map

UE - World Creation - Worldbuilding Tools - World Partition - Sep 28, 2022

When trying to load the actor, the warning "Can't load actor guid from package" will show. In FWorldPartitionActorDesc::Load, it's unable to find the object: Package = LoadPackage(Package, *Ac ...

Motion Warping component disappears on Editor restart or when swapping engine versions.

UE - Anim - Gameplay - Nov 19, 2024

Motion Warping component is disappearing on Editor restart or when swapping engine versions. When this occurs, the BP has the following Compiler Results messages: Component class is not set for'Mot ...

Pressing the focus key twice in a Niagara System's preview window causes the preview to lose orbit around the system when moving

UE - Niagara - Apr 18, 2022

Pressing the focus key twice in a Niagara System's preview window causes the preview to lose orbit around the system. Upon pressing the focus key again, the orbit remains lost. Alt + Left-Click also ...

[CrashReport] UE4Editor_CoreUObject!FWeakObjectPtr::operator=() [weakobjectptr.cpp:28]

UE - Anim - Sequencer - Nov 3, 2016

This Jira was created from CrashReports submitted by the public due to the high number of occurrences. Error message: Access violation - code c0000005 (first/second chance not available) Source C ...