Unreal Engine Issues
Unreal Engine Issues
[AI] Crash when gathering heightfield geometry on worker thread
UE - AI - Navigation - Jun 25, 2025From the body of the ticket: We aim to do as much of the work off the game thread as possible to avoid impacting frame rate. We've recently found a crash during collection of the geometry slices fr ...
Using World Composition with networked applications will cause sublevels to be loaded on clients and not properly replicate.
UE - World Creation - Worldbuilding Tools - World Composition - Dec 15, 2016World Composition is set up to actively manage when levels are loaded and unloaded. However, using this in network applications can cause clients to load levels instead of the server (if a client wa ...
RewindDebugger visual artifacts when actor's LOD switches during recording when using MetaHumans
UE - Anim - Gameplay - Mar 28, 2024Rewind debugger sometimes behaves incorrectly during lod switches. Users have found this on a metahuman. ...
Irrelevant If Else call in ScriptCore.cpp
UE - Gameplay - Blueprint - Nov 3, 2016On line #1301 in ScriptCore.cpp, there is the following if statement:if (Function->FunctionFlags & FUNC_Native) { Function->Invoke(this, NewStack, ReturnValueAdress); } else { Fu ...
Missing check for nullptr in Linker.cpp
UE - Foundation - Core - Nov 3, 2016At line 610 in Linker.cpp, the following declaration is made:UPackage* FilenamePkg = (ExistingPackage ? ExistingPackage : CreatePackage(nullptr, *PackageNameToCreate)); if (FilenamePkg != Exis ...
Unnecessary extra condition check in PropertyStruct.cpp
UE - Foundation - Core - Nov 3, 2016On line 300 of PropertyStruct.cpp, there is the following if check:if ((Struct->StructFlags & STRUCT_SerializeFromMismatchedTag) && (Tag.Type != NAME_StructProperty || (Tag.StructName != Struct->Get ...
SSL certificates for HTTPS are not properly verified on Windows
UE - Online - Feb 7, 2017A user has reported that, due to a change that was made back before 4.12, SSL certificates for HTTPS are not verified correctly when building on Windows. This is due to the change requiring a bundle ...
PDI-DrawPoint - Zoomfactor being calculated incorrectly
UE - Graphics Features - Feb 20, 2017A licensee has reported that the ZoomFactor variable inside of the DrawPoint function is being calculated incorrectly. It currently is calculated using the lesser of the projection matrix's horizont ...
FBatchedElements::Draw - OrthoZoomFactor can be reset to 1.0f if Line.bScreenSpace is ever false
UE - Graphics Features - Feb 20, 2017A licensee has reported that the Draw function in BatchedElements.cpp can set the OrthoZoomFactor (not a local variable) to 1.0f if Line.bScreenSpace is ever found to be false. The line this can oc ...
USkinnedMeshComponent::FindClosestBone does not respect bRequirePhysicsAsset parameter
OLD - Anim - Mar 20, 2017A licensee has reported that the USkinnedMeshComponent::FindClosestBone function does not respect the bRequiresPhysicsAsset parameter, resulting in the bone returning bones that are not part of the ...