Unreal Engine Issues
Unreal Engine Issues
[AI] EQS incorrectly sorts when auto-sort in single-item mode when there is only one filtering and one scoring test.
UE - AI - EQS - Dec 14, 2021EQS places a cheap filter as the last step of a query when using auto-sort for single item results if there is only one filter. Found via [Link Removed] which is quoted below:Environmental Query sys ...
FBX naming conflicts causing collision to not import correctly.
UE - Editor - Content Pipeline - Import and Export - Feb 17, 2025For our static mesh pipeline we have group nodes in Maya that use the name of the asset. Under that we have a mesh that also has the name of the asset. We may also have collision as well so a typica ...
FIXIF: Using the Merge Blueprints feature crashes the editor
UE - Gameplay - Blueprint - Feb 18, 2015Using the Merge Blueprints feature crashes the editor. This repro is for clicking between the error and warnings while merging, but the editor will generally crash if the Merge is finished or if an ...
Blueprints break when implementing a duplicated BP interface along with the original
UE - Framework - Blueprint - Mar 1, 2024When duplicating a blueprint interface, the GraphGuids of the original BP interface's function graphs are unchanged: function graphs across the two BP interfaces now have the same GraphGuid. This is ...
When importing an FBX with Combine Meshes = False, one uasset will be created for the collection of assets.
Tools - Feb 4, 2016When importing a mesh, there is an option to Combine Meshes, which by default is checked. Unchecking this option will bring in the individually named parts contained in the FBX as unique objects in ...
Users Unable to create C++ Projects
UE - Foundation - Core - Mar 6, 20152nd AH post with the same issue: https://answers.unrealengine.com/questions/183441/cant-load-c-projects.html Multiple people have reported not being able to create a C++ project. Creating a Bluepr ...
Lightmass: Blocky lightmap artifacts appears on the Mesh Actor which is shadowing by a single face mesh
UE - Graphics Features - Lumen - Jun 9, 2020Begin Map Begin Level Begin Actor Class=/Script/Engine.StaticMeshActor Name=Plane_2 Archetype=/Script/Engine.StaticMeshActor'/Script/Engine.Default__StaticMeshActor' Begin Object Class=/Script/En ...
[CrashReport] UE4Editor_Engine!LoadSpecialMaterial() [unrealengine.cpp:1523]
UE - Graphics Features - Nov 10, 2017This is a longstanding crash that has occurred for more than 200 users since at least 4.13. Based on user descriptions this appears to permanently corrupt a project. User DescriptionsI just turned ...
The Geometry Collection Dataflow node CreateGeometryCollectionFromSources is breaking Material Assignment
UE - Simulation - Visual - Jul 21, 2025The Geometry Collection Dataflow node CreateGeometryCollectionFromSources is breaking Material Assignment. As the licensee has pointed out, this previously worked in 5.5. The most probably cause fo ...
[CrashReport] UE4Editor_CoreUObject!UObjectPropertyBase::Identical() [propertybaseobject.cpp:60]
UE - Foundation - Cpp Tools - Hot Reload - Nov 17, 2016This Jira was created from CrashReports submitted by the public due to the high number of occurrences. Error message: Access violation - code c0000005 (first/second chance not available) Source C ...