Unreal Engine Issues

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 ...

Child nodes do not call PrepareForReplication unlike root nodes in Replication Graph

Child nodes are by default not added to the PrepareForReplicationNodes array in order to prevent unnecessary calls to PrepareForReplication. However, this difference in behavior is not very apparent ...

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 ...

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 ...

Unnamespaced UnrealMathUtility.h macros clash with other headers

Reported here: [Link Removed] > See this commit: > > https://github.com/EpicGames/UnrealEngine/commit/acd754e12dc9a7ffc7f173c8433a6bafc0262b51#diff-b18d4f9b879748fdacff2caa885b231e8c9e0b899d90d5d ...

MoviePipeline: Sequencer 'Lock to Display Rate' breaks temporal sub-sampling

IOS mouse pointer / cursor support

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

Updating a material layer may not update materials that are using that material layer instance

Material layer instances do not generate a valid UMaterialFunctionInterface::StateId. For this reason, materials and material instances that use material layer instances will not recompile their sh ...

World Outliner: Selecting Folder fails (needs to be clicked twice)

I've investigated the issue and it is related to TypedElementSelection sending out end of frame selection change events. WorldOutliner when it is the source of a selection change does so inside a r ...