Editor mode tabs can get corrupted in the layout

UE - Editor - Workflow Systems - Apr 2, 2024

This can happen with any mode. What actually happens is, when closing the Editor, the Editor saves its layout before closing the active Editor Mode, which leads the editor to think the tabs are sti ...

FTimeline::bPlaying may remain false on clients when replaying replicated timeline

UE - Gameplay - Apr 2, 2024

This seems to occur when FTimeline::Stop is called on the client but not on the server, as this will set bPlaying to false locally on the client. Because the value for bPlaying doesn't change on the ...

Reimport FBX does not correctly update frame-rate

UE - Anim - Runtime - Apr 2, 2024

This is an issue with the sequencer model, it does not clear its bPopulated flag so doesn't allow for changing the frame-rate to a non-compatible (multiple/factor off FPS). ...

Issue where some colors are missing in some materials created by importing MaterialX files

UE - Editor - Content Pipeline - Import and Export - Apr 1, 2024

From user: Comparing UE, Arnold, Vray and MaterialXView that have MaterialX files imported, some materials of UE clearly look different from other renderers. Looking into this issue, we found that ...

Enhanced Input does not fire a "Cancelled" event for mappings that were in progress, but removed during a key-rebuild

UE - Gameplay - Input - Apr 1, 2024

If the return value of a trigger goes from ETriggerState::Ongoing to ETtriggerState::None, without returning a ETriggerState::Triggered, then there should be a "cancelled" event that is fired when E ...

CommonUI Analog Cursor + Enhanced Input triggers cause triggers to get stuck when alt-tabbing

UE - Editor - UI Systems - Mar 29, 2024

Came out of [Link Removed] and is related to this one too I think that this is signaling that we need better solutions for input consumption in the engine honestly. This is a constant pain point ...

RewindDebugger visual artifacts when actor's LOD switches during recording when using MetaHumans

UE - Anim - Gameplay - Mar 28, 2024

Rewind debugger sometimes behaves incorrectly during lod switches. Users have found this on a metahuman. ...

UE5.4 Preview 1 produces rendering artifacts on Landscape with World Position Offset

UE - LD & Modeling - Terrain - Landscape - Mar 28, 2024

A material on a landscape with WPO will cause major ghosting, even if that WPO is a dynamic {0,0,0} ,such as from a black texture. ...

Sampler Source: From Texture Asset with Streamed Virtual Texture

UE - Rendering Architecture - Mar 28, 2024

It appears that Texture Samplers for Virtual Textures do not respect the Tiling Method from the Virtual Texture Asset when the "Sampler Source" is set to "from texture asset". ...

Translucency area has stripe-style issue on TSR

UE - Graphics Features - Mar 28, 2024

The TSR History Rejection buffer develops a grid-like artifact over translucent, camera-facing planes. ...