Unreal Engine Issues

Rect Light not rendered correctly when using Virtual Texture as source texture

Licensees have reported that this issue occurs when rendering from the command line: Rectangular lights with virtual textures do not render when you run the "Render (Remote)" button in the Editor, a ...

Niagara Data Interface "Errors and Warning" section on Module Details not updating when error messages change

This is a regression: it worked correctly up to UE 5.5, but not in 5.6 or mainline latest. Possibly caused by CL 40093049. Class UNiagaraDataInterface provides virtual method GetFeedback(), which a ...

Lumen Card Sharing is active on material with custom primitive data

The wrong emissive value may be used on Nanite objects with custom primitive data when Lumen card sharing is enabled. This issue can be mitigated with: r.LumenScene.SurfaceCache.AllowCardSharing 0 ...

Weight blended layers can leave ghost traces when cleared

ACineCameraAttachMount's "Target Actor" constraint does not work with Spawnables or Replaceables in Sequencer

Constraints (UTickableConstraint) are usually created throuh the "Animation" tab available in the Editor's "Animation Mode". When created through that interface while Sequencer is open, the internal ...

Modifying PostProcess Film Slope can cause TSR to produce ghosting artefacts

When TSR is active, the scene is dark, and a foreground object is lit, modifying the Film/Slope value on a PostProcessVolume can lead to TSR ghosting. TSR occurs prior to Tonemapping, so the issue ...

USourceControlHelpers::IsEnabled crashes shipping builds

The licensee has reported that the naming of the IsEnabled node is not descriptive enough and can be easily confused with other IsEnabled functions or variables. The Licensee has requested that the ...

Incorrect resolution used because SetProcessDpiAware() is not called when bAllowHighDPIInGameMode=False

The incorrect resolution is used on computers with 4k monitors that use DPI scaling (default 150%) because the default for UE projects is bAllowHighDPIInGameMode=False which results in SetProcessDp ...

Rewind debugger would crash when recording a character using Pose search

Our character is using the Pose search setup from GameAnimation content example. The architecture of the system is most the same with some new function that account for some input difference and sp ...

Copying Gameplay Tag Queries uses paths of instanced objects.

Copying Gameplay Tag Queries (FGameplayTagQuery) in the editor uses transient instanced object paths, so will no longer be valid when the data is unloaded, making it difficult to save or share queri ...