Unreal Engine Issues
Unreal Engine Issues
Map actor reconstruction does not reattach external non-root components
UE - Gameplay - Components - Jan 17, 2024For two map placed actors, if one actor B's non root component is attached to another actor A, the attachment is not retained when actor A reruns its construction script, such as when moving actor A ...
Pre-UE5 serialized FVariant FVector data corruption when deserialized in UE5
UE - Gameplay - LWC - Jan 15, 2024FVariant is a struct that implements a union of data types, including FVector. When assigning an FVariant an FVector value in engine versions UE 4.27 or earlier, the FVariant will deserialize incorr ...
Double clicking on Interface Function in Blueprint Graph does not take you to the function implementation.
When double-clicking on an interface function call within a blueprint, the expected behaviour is that it will take you to the implementation of this function. However, it currently does nothing. ...
Specular/Anisotropy problems with Nanite Meshes
UE - Rendering Architecture - Jan 11, 2024Specular highlights can disappear with clearcoat materials, when "Clear Coat Enable Second Normal" is enabled ("r.ClearCoatNormal"). ...
UObject Macro Libraries cannot use functions that require a WorldContext
UE - Gameplay - Blueprint Editor - Jan 11, 2024If you make a Blueprint Macro Library that derives from UObject you are then unable to use any functions that require a WorldContext, like Delay. This is because the WorldContext cannot be assumed l ...
Mouse lock on a widget in the RetainerBox is misaligned and locked in the wrong position in the standalone/package application
UE - Editor - UI Systems - UMG - Jan 9, 2024Locking the mouse to a widget covered by a Retainerbox locks it in a different position in the standalone/packaging application than in PIE. This does not happen if RetainerBox is disabled and the ...
NiagaraEmitter is saved with the different asset name when renaming with speceficed name
UE - Niagara - Jan 9, 2024Renaming a NiagaraEmitter to a specific asset name changes it to an unspecified asset name. This happens only with NiagaraEmitter, not with other assets. ...
Setting GDelayTrimMemoryDuringMapLoadMode = 2 causes crash on same map reload
UE - Gameplay - Jan 8, 2024GDelayTrimMemoryDuringMapLoadMode is a CVar that controls whether a garbage collection should take place during map change after unloading the previous map and before loading the new one. By default ...
Bug when trying to Ctrl+Z after Replace Actors
UE - Editor - Workflow Systems - Dec 22, 2023From the UDN case #00649142: My team noticed a bug where sometimes when using "Undo" (Ctrl+Z usually) the BP they are working on disappears in the level. We were able to find a 100% repro case when ...
Blueprints from UE4 with dangling delegate reroute node crashes on UE5 load
UE - Gameplay - Blueprint Compiler - Dec 22, 2023If a project from UE 4.27 or earlier has a blueprint with a reroute node dangling (no outgoing connection) from a Custom Event Node's delegate pin (red), this blueprint will crash when loaded in UE ...