Toast Notifications Steal Focus Causing Unreal Editor Submenus to Disappear during Navigation on Linux

UE - Editor - Developer Usability - May 8, 2025

Sub-menus disappear when using Linux in a remote session in launcher build of UE Release 5.5.4. ...

When very far out from the map origin, large static mesh is not streaming in until player is close in world partition even though it's within loading range.

UE - World Creation - Worldbuilding Tools - World Partition - May 7, 2025

Context World Partition has a distance-based level streaming system that provides a complete solution for large world management. Problem The problem is that when the player and large static mesh a ...

FX.TestGPUSort fails on Vulkan

UE - Niagara - May 5, 2025

“FX.TestGPUSort” fails on both PC Editor and Android with Vulkan RHI. ...

GeometryScript: BlueprintCallable GetMaxMaterialID return pin is incorrectly named "Enabled" instead of "MaxID"

UE - Graphics Tools - Modeling Tools - GeometryScripting - May 2, 2025

The return pin for the "Get Max Material ID" function is incorrectly named "Enabled" when the function returns the MaxID. See \Engine\Plugins\Runtime\GeometryScripting\Source\GeometryScriptingCore\ ...

Ensure triggered when creating Scene Proxy for GroomComponent

UE - Rendering Architecture - RHI - Apr 30, 2025

When a room component is added in C++ via the actor constructor, an ensure is triggered from precaching and the groom component. Behavior also observed on UE5/Release-5.5, CL: 40988944 ...

Switching project monitor with shift+win+arrow keys

UE - Rendering Architecture - RHI - Apr 24, 2025

Using Windows+Shift+Arrow keys to move the application window in Windowed Fullscreen from a low resolution monitor to a high resolution monitor does not resize the application window on a Windows 10 ...

Missing info in GPU breadcrumbs and DRED logs

UE - Graphics Features - Apr 21, 2025

Some breadcrumbs and D3D12 logs are missing data which should normally be filled in e.g. Breadcrumbs: > PostProcessMaterial %dx%d Material=%s [Active]. After investigating this, there seems to be a ...

FSubobjectData::SetupAttachment() receives SocketName as a parameter but ignores it.

UE - Framework - Components - Apr 17, 2025

When using the Subobject Data Subsystem in C++, method FSubobjectData::SetupAttachment() can be used to help attaching a component to a parent at a given socket. This function receives SocketName as ...

FStateTreeExecutionContext::GetDebugInfoString() outputs wrong info and crashes when using linked state trees

UE - AI - Debugging - Apr 17, 2025

When using State Trees, the AI Debugger can be accessed during play to show information about their current execution state. If a behavior tree is currently in a state that references a linked tree, ...