Unreal Engine Issues

MaterialExpressionLandscapeLayerBlend with material attributes as inputs, the output material attributes have wrong sizes

From the UDN ticket: When using MaterialExpressionLandscapeLayerBlend with material attributes as inputs, the output material attributes have wrong sizes: ie output Normal attribute cannot be conve ...

FEditorFileUtils::SaveCurrentLevel returns true even when it fails

In FEditorFileUtils::SaveCurrentLevel, we set the default return code as true (success) before checking validity of the current level or seeing if PromptToCheckoutLevels is successful. If we're unab ...

AttachComponentToComponent node does not change the location of a Spawned particle system at runtime

You can use the "Spawn Emitter Attached" function as a work around ...

Blueprint functions with unconnected return nodes may return unexpected values

We don't clearly define the behavior for a Blueprint function when an execution path without a return node is taken. We should either report an error, or have the function return the default initial ...

EditInlineNew properties on components don't work if the component name has whitespace

EditInlineNew properties on components can't be properly set if the component name has whitespace in it. This appears to be a problem with resolving the property name in SPropertyEditorEditInline::O ...

Specific Blend Mode of Material on UMG render incorrectly when HDR is enabled

This issue occurs with the Additive and Alpha Holdout settings. ...

FScriptMapHelper::HasKey() and FScriptSetHelper::HasElement() fail on new keys with a substring of another key

Duplicate key checking in maps and sets in the editor is done via calls to FScriptMapHelper::HasKey() and FScriptSetHelper::HasElement(), but this code is checking for object names which are subsets ...

The orientation of the tangent space seems wrong with SkinCache recompute tangent enabled

HLOD lightmap lost after level reopening with "save LODActors to HLOD Packages" option in project settings is on.

Problem importing broken FBX

An FBX exported from 3DEXCITE DELTAGEN fails to parse correctly in the latest FBX SDK and crashes the UE importer. This FBX is automatically repaired when loaded into Maya (citing "polygons with ov ...