Unreal Engine Issues
Unreal Engine Issues
Local Variable loses value after reference moves file location
UE - Gameplay - Blueprint - May 23, 2017Local Variable loses value after reference moves file locations. This does not just affect construction scripts, following these steps with a function instead produced the same result. This issue do ...
[AI] Compilation error when using const version of FNavigationPath::CastPath<PathClass>() const
UE - AI - Navigation - Jan 5, 2022Const version of function is not used elsewhere in the engine so it usually gets skipped when compiling. Produces the following error when compiling: UnrealEngine\Engine\Source\Runtime\Navigation ...
The crash reporter tool does not start on Windows 8.1 machines when running the Engine built from source code.
UE - Foundation - Core - Dec 5, 2014The source code to build the Engine that is available from GitHub includes the file dbghelp.dll, which prevents the crash reporter tool from starting on Windows 8.1 machines. This file is not presen ...
Migrating assets to a plugin causes references to break
UE - Editor - Content Pipeline - Content Browser - Jun 14, 2018The migrate function is meant for moving assets from one content folder to another, so it does no actual modification of the references in the migrated assets. This is normally fine, since we expect ...
Landscape components not returning physical material with LineTrace in Editor mode
UE - Simulation - Physics - Query - Sep 13, 2023The OutHit from a LineTraceByChannel against a landscape in Editor is not returning the Physical Material of that landscape. While PIE there is no issue. While using BoxTrace (even in Editor) there ...
Engine no longer compiles after backporting RHI thread improvements and crash fix
UE - Rendering Architecture - RHI - Apr 24, 2025Unreal Engine 5.4 code will no longer compile after applying both the RHI improvement code changes as described in [Link Removed] and the fix for the crash described in [Link Removed]. The compilati ...
HeaderTool issue with comment format
UE - Foundation - Core - May 18, 2015If a user is attempting to apply a header comment to a function, if the following syntax is used, the editor will return the error "End of class header encountered inside comment" /** @brief Values ...
Modifying a Static Mesh's "Y" Collision Rotation also modifies "X" and "Z" Rotation
UE - Gameplay - Dec 12, 2016If the user modifies the "Y" Rotation value of a Static Mesh's Collision, the "X" and "Z" values are changed. The values will move +/- 1 point from their value prior to modifying the Y value. This ...
BP - Nativized build will crash at runtime if a BP class enabled for nativization includes a ChildActorComponent with a BP not enabled for nativization set as the ChildActor class.
UE - Gameplay - Blueprint - Apr 20, 2017Note: The same crash will occur if the nativization mode is set to "Inclusive" in the Project settings and if the ChildActor BP class is a data-only Blueprint (i.e. has no script or member variables ...
bPersistentLines is not respected by DrawDebugLine
UE - Graphics Features - Nov 1, 2018It looks like the line's lifetime is forced to the default line lifetime of one second if the provided lifetime is less than zero, which would be the case if calling the function with just enough pa ...