Unreal Engine Issues

Actors removed from the world are unregistered both before and after EndPlay

Actors that are removed from the world have UnregisterAllComponents called twice. Removal can be caused by unloading a data layer that owns the actor. In cases like exiting the application or destr ...

CreateD3D12Texture causes the Low Level Memory system to register two allocations for the same pointer on the same track channel

CreateD3D12Texture causes two OnLowLevelAllocs in LLM to be called with the same pointer and the same channel, leading to a warning. LLM WARNING: Replacing allocation in tracking map. Alloc/Free Mi ...

TraceString for TChar strings has an erroneous return statement leading to unreachable code

In StringTrace.cpp, the TraceString(const TCHAR* InString) function has an erroneous return statement before UE_TRACE_LOG_DEFINITION within the branch checking if the string is already in the set. ...

D3D12Texture::Lock incorrectly sizes staging buffer when locking block compressed resources

D3D12Texture::Lock computes the size of the staging buffer on Line 1541 of D3D12Texture.cpp. This size uses the RowPitch, which for BCn resources encapsulates the size in bytes of a single row of bl ...

Objects animated in Sequencer fail to trigger collisions against stationary characters with character movement components

When an object, such as a cube, is animated in sequencer and that object's path intersects a stationary character with a character movement component, the object will pass through the character with ...

Level Instance desaturation effect does not respect occlusion when the selected object is occluded by a Nanite mesh

When selecting an asset in a level instance that is being edited via LevelInstance/Edit, the silhouette of the object is visible through occluding nanite meshes. This has the effect of disabling th ...

Fix sampling frame rate not properly setup for dynamic montages

Content Browser columns should not be determined by a randomly picked asset

SAssetView::SetMajorityAssetType for most asset types randomly picks a visible asset to grab the metadata from, which is what derives the CB columns. This can become a problem if the random asset it ...

Deleting an asset and replacing with another asset while connected to source control can cause issues

When using SVN, when deleting an asset in Unreal Editor and replacing it with another asset, the checkout fails and the references connected to the previous asset are broken. ...

Subsurface Scattering Checkerboard with SceneColourFormat 3 (High Scalability) leads to a visual artefact when temporal upscaling is in use

Primarily visible at very low internal resolutions (25-33%), the SSS checkerboard with an RGB scene colour format (r.SceneColorFormat 3) causes a double-image artefact both internally and on the sil ...