Unreal Engine Issues
Unreal Engine Issues
Expanding and altering a macro affects other macros in use.
UE - Gameplay - Blueprint - Nov 6, 2017Using the Expand node feature on a macro from a macro library alters the current functionality of other instances of the macros that are in use(even though the macros themselves have not changed). ...
Nativizing a blueprint interface using TMap/TSet causes Fatal error in UHT
UE - Gameplay - Blueprint Compiler - Sep 9, 2020FPropertyBase constructor does not handle a TMap/TSet property. Following workaround can avoid this error. explicit FPropertyBase(FProperty* Property) : PropertyExportFlags(PROPEXPORT_Public) ...
Packed level actors and Level instances are sometimes not included in HLOD build on a World Partition Level
UE - World Creation - Worldbuilding Tools - HLOD - Mar 14, 2025Context World Partition - Hierarchical Level of Detail (HLOD) system uses custom HLOD Layers to organize large amounts of Static Mesh Actors and generate a single proxy mesh and Material. Problem T ...
StateTree : Crash when executing GetPropertyRef in SubTree linked via Linked Asset
UE - AI - StateTree - Aug 26, 2025A crash occurs when GetPropertyRef node is executed from a SubTree that is linked within a StateTree, which itself has been linked from a parent StateTree via a Linked Asset ** . The processing con ...
Disabling all AnimBP assets for nativization causes an EDL circular load check on QAGame launch for the QA-Animation map.
UE - Gameplay - Blueprint - Sep 6, 2017Encountered while attempting to disable all AnimBP assets for nativization as a workaround for [Link Removed]. ...
When editing a Niagara module an error can occur if using non-module functions, even with a correctly set usage bitmask
UE - Niagara - Feb 14, 2023When editing the module the call to FHlslNiagaraTranslator::HandleDataInterfaceCall has the usage "Module", so it treads the module as if that was its stack context, even though the module's usage b ...
Unable to Use Console Command with bShowLaunchImage=False
UE - Platform - Mobile - Aug 16, 2024Disable button style is not applied when a button is disabled
UE - Editor - UI Systems - Aug 24, 2015If the user applies a material or texture to the disabled button style option the button will not used the material/texture that was used but will instead use the default grayed out button look. E ...
A level will not save if a Blueprint that uses a Blueprint Component with an Event Dispatcher is placed in it
UE - Gameplay - Blueprint - Mar 8, 2015A level will not save if a Blueprint that uses a Blueprint Component with an Event Dispatcher is placed in it. Reproduced in 4.7.2 binary. Could not test in Main due to [Link Removed] ...
Cracks in Nanite Tesselated Landscape
UE - Graphics Features - Nanite - May 13, 2024Landscape component edges can become disconnected when using Nanite Tessellation at the edges of weight-blended layers. ...