Unreal Engine Issues

In UInstancedStaticMeshComponent, when some instances have near-zero scale, removing instances crashes the engine

Class "UInstancedStaticMeshComponent" deliberately leaves null pointers in the "InstanceBodies" array of FBodyInstances. This can be seen in methods such as: [Engine\Source\Runtime\Engine\Private\I ...

Crash when copying PF_Stencil format from the GPU to the CPU

This is a crash related to copying depth-stencil render targets to the CPU. See linked UDN for more info. ...

Unable to recapture the network channel data after stop the profile

It appears that networking insights data is not being gathered when a delay capture is started with the "trace.send" or "trace.start" command. If we were starting from the application startup time w ...

Nanite landscape mesh has a significant difference with normal landscape when using large Z scale value

Result : there are significant differences between the generated Nanite mesh and the original landscape mesh (see [Link Removed]) Note : the bug was originally reported on this UDN : [Link Remove ...

Using the end of the curve as a weighted tangent does not yield the expected value.

When changing the tangent value, the last value is sometimes not 1.0 [Reproduce sample project] [Link Removed] ...

CA_VALID_POINTER and CA_CHECK_RETVAL static analysis annotations broken

We had some code using the CA_VALID_POINTER and CA_CHECK_RETVAL annotations which had been working fine up until the 5.3 engine release. In 5.3, we started getting the following compile errors in a ...

Assert when toggling RHIThread

HeterogeneousVolumeComp doesn't render properly using DynamicMaterialInstance created in Construction Script

AbilitySystemComponent::NotifyAbilityEnded Can Crash due to Callbacks Invalidation Specs

Pasting from the UDN: Unsafe code in AbilitySystem can lead to crash when granting an ability inside OnAbilityEnded Hello. We just ran into a crash. After investigation, it seems to be caused by ...

Crash when deleting a folder with children in the Outliner in a large map

We've encountered a crash when trying to delete a folder after renaming one of its' children. I have attached a video and the callstack to this ticket. This might be related to [Link Removed] as the ...