Space Bar pressed event not received in Windowed mode

UE - Editor - UI Systems - Slate - Jun 1, 2020

Replication issues & warnings if a client hitches while the server seamless travels

UE - Networking - Jul 28, 2020

If a client hitches while a server performs a seamless travel, the client will get multiple lines of logspam of these warnings:Warning: UActorChannel::ProcessBunch: SerializeNewActor failed to find/ ...

Parameterized Vector4 is treated as Float3

UE - Graphics Features - Aug 28, 2020

A Parameterized Vector4 are being treated as Float3. This prevents users from being able to use Vector4s in an If node during runtime. This is seen as far back as //UE4/Release4.22 cl 8065155 so th ...

Making a hidden level the current level changes tile position in World Composition

UE - World Creation - Worldbuilding Tools - World Composition - Nov 26, 2020

[AI] Navigation memory set in NavMeshMemory::ForAnyElementType::ResizeAllocation shows as Untagged in LLM instead of being under Navigation.

UE - Runtime - Character - Sep 27, 2022

Licensee found that memory being allocated during a resize in NavMeshMemory is not being tagged within LLM as NavigationMemory but show in LLM as Untagged memory. They do not have a callstack showca ...

Crash when opening or editing a DataTable with a Row Structure that contains a BodyInstance

UE - Runtime - Deformable - Apr 5, 2024

If a DataTable Asset is created with a Row Structure that contains a member variable of type BodyInstance, the Editor will crash when attempting to open it while it has no rows. It will also crash w ...

PCG Volume does not regenerate after being moved through a sequencer sequence

UE - Graphics Tools - PCG - Components - Jan 23, 2026

Any transform modifications on the PCGVolume by Sequencer use USceneComponent::SetRelativeTransform directly and are not tracked by the TrackingManager (FPCGTrackingManager::OnObjectPropertyChanged ...

Translucent Materials do not work well with Depth of Field

UE - Graphics Features - Apr 10, 2015

Depth of Field do not work well when using a translucent material, even if the material has no opacity set. Image attached as reference. Light brown colored mesh is translucentGray mesh is opaque ...

Set Material for a DM in the Construction script will result in a crash

UE - Simulation - Physics - Destruction - Jun 3, 2015

Setting a material in a BP construction script after setting a DM will result in a crash. This will render the BP inaccessible once the project reloads. Opening the BP will result in an instant cras ...

Canceling the Color Picker while modifying Curve Editor colors Moves Transforms Curves

If the user presses 'Cancel' when modifying colors using the Color Picker within the Curve Editor, the curves points are all transformed. Issue is reproducible in the below engine versions: 4.8.3 - ...