Blurry textures on BSP geometry when a very small static mesh using the same texture is in the same scene (standalone game)

UE - Graphics Features - Mar 9, 2020

The texture streamer does not appear to take into consideration the size on screen of any BSP brushes, only static meshes. When a large brush, and a very small static mesh, both using the same textu ...

UWorld::GetNetMode returns incorrect value during UGameInstance::StartPlayInEditorGameInstance

UE - Networking - Jan 19, 2023

During PIE instance initialization, there seems to be a window during which UWorld::GetNetMode will not return the expected value: before the instance's NetDriver has been created but after UGameIns ...

UWorldPartitionSubsystem::IsStreamingCompleted returning the wrong query result when all cells and actors in location are in DataLayers

UE - Engine Scaling - Streaming - World Partition - Jul 24, 2025

Context: Data Layers is a system within World Partition used to organize Actors both in the Editor and at runtime. It allows for the user to dynamically load and unload layers in the Editor to help ...

GPU Particle Collision causes shaking when set to bounce with low resilience.

UE - Niagara - Jul 27, 2016

A particle emitter with GPU sprites on certain settings will shake violently as they collide with the ground. This requires there to be a strong Const Acceleration module and Collision with low resi ...

Get Constraint Force node always returns a magnitude zero vector

UE - Runtime - Simulation - May 4, 2022

Get Constraint Force node always returns a magnitude zero vector. Repro Rate: 3/3 Tested this in //UE4/Release-4.27 @ CL#18319896 and was able to get the constraint force, it is a regression. ...

In a listen server, when a client moves, anim notifies don't get fired for the server/host.

UE - Characters - Animation - Nov 14, 2022

Reproduced 3/3 times. Was not able to reproduce in //UE5/Release-5.0 - CL 20979098 Binary. Confirmed Regression. ...

CreateD3D12Texture causes the Low Level Memory system to register two allocations for the same pointer on the same track channel

UE - Rendering - RHI - Oct 31, 2024

CreateD3D12Texture causes two OnLowLevelAllocs in LLM to be called with the same pointer and the same channel, leading to a warning. LLM WARNING: Replacing allocation in tracking map. Alloc/Free Mi ...

Editor crashes when using PCG SpawnActor with a DataLayer inside a Level Instance

UE - World Creation - Procedural Tools - Jun 4, 2025

A PCG actor is assigned to a DataLayer and placed inside a Level Instance. Then that Level Instance is placed into a World Partition map. When the SpawnActor node in the PCG graph is set to MergePCG ...