Unreal Engine Issues

Artifacts when using virtual textures for multiple attributes in material layers

When using the Material Layer system and virtual textures, the number of physical texture samples in the shader increases with the number of material attributes that a virtual texture writes to. The ...

Fix up IOS errors calling UI API from non-UI threads

Stationary/Movable Lights render based on distance from World Origin in Orthographic Camera View

When using the Orthographic Camera view (such as that used with the Paper2D Template) any lights that are distant from the world origin will start to fade out as if they are being culled. The distan ...

Updating a meshes UCX collision in an FBX will not reimport with the updated collision if it's been removed

DESCRIPTION: When making a mesh with custom collision with the naming convention of UCX and exporting the FBX for use in UE4 the collision will import and update if any changes are made and reimport ...

Unexpected behavior from moving multiple widget components with render transform

Unexpected behavior occurs from moving multiple widget components with render transform applied to them. The individual components seem to change relative position or rotation when being clicked and ...

Unable to select foliage by left clicking after 1.5 k foliage meshes placed

When using the foliage tool, once the mesh count reaches around 1.5k and higher you will be unable to select individual meshes by using the mouse. The lasso tool and the select all tool work as inte ...

[CrashReport] UE4Editor_GraphEditor!SGraphPin::GetTooltipText() [sgraphpin.cpp:1100]

This is a common crash that has affected over 60 users since at least 4.16 User DescriptionsDeleted a SET variable Source Context 1091 FText SGraphPin::GetTooltipText() const 1092 { ...

Possession is not replicated properly to some clients

A user has reported an issue where Possession replication or Character Movement replication, unsure of which, is not working properly for some clients. It seems to work fine for the first client but ...

NormalizePackageNames() should interpret 'exclude developer folders' to also exclude packages in ExternalActors and ExternalObjects

In NormalizePackageNames() (PackageUtilities.cpp), there is a PackageFilter parameter, which can be set to exclude developer packages (NORMALIZE_ExcludeDeveloperPackages). The code only checks the b ...

LIVE: Setting sg.EffectsQuality between values will reset Destructible meshes if they have fractured

DESCRIPTION: Using the command line sg.EffectsQuality and setting a value will reset a destructible mesh if it has already been fractured. AH Post: https://answers.unrealengine.com/questions/12850 ...