Network Prediction crash when smoothing service instance data is reallocated out from under FNetworkPredictionStateView

UE - Gameplay - Network Prediction - Apr 4, 2025

Received a report from a licensee using Network Prediction Plugin and Mover.  There is a strong likelihood of a crash occurring when using NPP's smoothing option and spawning new NPP-simulating ins ...

Blueprint asset tabs move around weirdly when you navigate between them with too many open

UE - Editor - Workflow Systems - Apr 3, 2025

The "parent class type" text changing size causes the tabs to shift around a lot when you have a lot of them. We need to figure out a better place for this text to avoid the issue ...

Non-Nanite Instanced Static Mesh Collision not showing in collision view

UE - Simulation - Physics - Apr 3, 2025

This issue is the same as [Link Removed], but it causes confusion for developers because only Nanite ISM are rendered correctly since UE5. . ...

Editor crash while saving asset during cook operation

UE - Foundation - Data Pipeline - Cooker - Apr 2, 2025

It is possible to experience an editor crash in 5.5.4 when the cook process generates a warning that references an asset while the editor is saving. It seems that during a save operation, the code t ...

UAT not considering remote root

UE - Foundation - Cpp Tools - Automation Tool - Apr 2, 2025

It seems like WriteFileList (TempStorage.cs) is not respecting the enginePath as set from horde context. _localDir in TempStorage.cs seems to be based off of the RootDir (details here). Proposed ...

Datasmith .WIRE Import - Shader name inserted into Material Element Slot

UE - Editor - Content Pipeline - CAD - Apr 2, 2025

Can we please implement a feature whereby the shader name applied to surfaces / objects is used for the Material Element Slot? When using Dataprep and replacing the materials using a table, it give ...

Investigate Streaming getting disabled on a World Partition map as a side-effect of loading the map as a regular asset

UE - World Creation - Worldbuilding Tools - World Partition - Apr 1, 2025

We recently encountered an odd issue where loading into our main world partitioned map would result in a crash caused by all streaming cells getting loaded at the same time. Turns out this was cause ...

Wolrd Partition Foliage Builder - Fails to build with multiple external actor folders.

UE - World Creation - Worldbuilding Tools - World Partition - Apr 1, 2025

Hello, We are building a world with world partition & a lot of nanite foliage. We want to modify out Foliage Instance grid size via the commandlet. [Link Removed] Even in a new empty level the c ...

Option "Use Mouse for Touch" does not work correctly when running the game in "Standalone" or "New Editor Window (PIE)" modes: Virtual joystick does not appear and mouse cursor is incorrectly hidden while captured.

UE - Gameplay - Input - Apr 1, 2025

The Editor provides option "Project Settings – Engine – Input – Mouse Properties – Advanced – Use Mouse for Touch" to allow testing virtual joysticks and other touch controls with the mouse. When ru ...

InlineEditConditionToggle Prevents Config Bools from Being Written to Settings .ini File

UE - CoreTech - Apr 1, 2025

In a Developer Settings Class, Boolean properties marked with InlineEditConditionToggle do not get written to the associated settings .ini file, preventing configuration settings from being saved pr ...