Building Geometry Stops UTickableWorldSubsystem Ticking

UE - Gameplay - Jan 13, 2025

Can be mitigated by reopening the Level. There is a repro project provided by the licensee on the case ticket. ...

[Interchange][FBX] Fail to import attributes animation curves with key values as integer

UE - Editor - Content Pipeline - Import and Export - Jan 13, 2025

cf[-https://forums.unrealengine.com/t/5-5-not-able-to-import-animation-curves-since-5-3-5-5/2267442/4-] Be carefull there is 2 bugs reported on that Forum and I think they are not related. The firs ...

NetUpdateFrequency Affected by Global Time Dilation

UE - Networking - Jan 13, 2025

Changing the global time dilation in a multiplayer game affects the rate at which actors are considered for replication, and setting it to 0 will even cause replication to stop entirely (unless the ...

Params in material instance disappear when grouping is changed in material with a material layer

UE - Rendering Architecture - Materials - Jan 11, 2025

If there is a texture parameter within a specific material attribute stream in the base material and also within the base material layer, they must have the same parameter group otherwise the parame ...

Material Emissive Color not working with SkyAtmosphereIlluminance Material Expression

UE - Graphics Features - Jan 9, 2025

A licensee has reported that they are unable to use an emissive material utilizing the SkyAtmosphereLightIlluminance material expression together with Nanite and Lumen. The linked UDN has some more ...

Missing texture assets cause warnings on editor start: LogStreaming: Warning: Failed to read file '../../../Engine/Plugins/Developer/PlasticSourceControl/Resources/Icon128.png' error.

UE - Editor - UI Systems - Jan 7, 2025

There are a number of missing texture assets which are failing to be read when the editor opens. This is causing a warning to be thrown each time the editor opens, potentially causing CI/CD tests (i ...

SetActorLabel() is slow on Landscapes

UE - Graphics Tools - Terrain - Landscape - Jan 7, 2025

I've noticed calling SetActorLabel() on a Landscape will call PostEditPropertyChanged() which causes the Landscape Components to regenerate all collisions. As per the repro, this can take a long tim ...

Memory leak in global distance field when bDisableWorldRendering=true

UE - Graphics Features - Jan 7, 2025

A memory leak occurs in global distance fields when bDisableWorldRendering=true As a workaround until this is fixed, you can disable the logic that checks bUpdatedThisFrame *in *GlobalDistanceField ...

AssetLocalization does not work and the asset does not switch to localization asset even if culture is specified

UE - Editor - UI Systems - Localization - Dec 20, 2024

Asset localization does not work. When playing in standalone, it shows "jp" texture instead of "en" texture even if "-culture=en" is set. This appears to be a regression issue, as the localization w ...

Ejecting from player in multiplayer PIE results in the wrong world being displayed

UE - Networking - Dec 13, 2024

In [Link Removed], it mentions that only the instance in the editor viewport supports switching to Simulate In Editor when running multiple instances in PIE. However, rather than showing that instan ...