Unreal Engine Issues

RVT Tiles Update Slowly When Enabling Nanite Tessellation On Landscapes

Crash on Mac for some 4.16 users while opening editor, related to Xcode

This is a common crash on Mac in the 4.16 release. The callstack is fairly generic , so it shares similarities with other Jiras such as [Link Removed] and [Link Removed], but this issue is differen ...

loading hangs on new level with the new audio engine and media sound components

When enabling the AudioDeviceModuleName=AudioMixerXAudio2 setting in the windowsengine.ini file it causes new level loads to lock up. This may be due to the garbage collection stuck in a loop wai ...

Inherited UserWidgets can't create animations that bind to widgets on their parent's WidgetTree

Animating an inherited widget from a child UserWidget class appears to work, but the bindings don't resolve properly and the animation is null at runtime. This workflow should either be supported, o ...

FMath::Eval ignores groupings while solving

This is not a regression. Tested in //UE5/Release-5.0 CL20979098 FMath::Eval ignores groupings while solving problems. This has caused some confusion with users who are expecting the groupings to b ...

Material Layers Ignore Virtual Texture Sampler Restrictions

Virtual Textures can be assigned to Texture Sample Parameters that are not configured for Virtual Textures, if that parameter is inside of a Material Layer. Also found in Release-5.4, CL 32426910 ...

Object Load order issue in Blueprint Editor

[Image Removed] change FindObject to StaticLoadObject might fix this issue ...

WasRecentlyRendered() and GetLastRenderTimeOnScreen() still triggers when a skeletal mesh re-enters the view frustum despite being occluded.

AActor::WasRecentlyRendered() and UPrimitiveComponent::GetLastRenderTimeOnScreen() both still trigger when a skeletal mesh (occluded behind a wall) re-enters the player's view frustum after being ou ...

When a Niagara User Parameter is renamed, mesh bindings on Niagara Mesh Renderers are not updated, and the binding is silently broken

In Niagara, Mesh Renderers expose a "Meshes" array for selecting the meshes to be rendered. On each array entry, a property "Mesh Parameter Binding" is available and allows the user to override that ...

[AI] Changing NavMesh Resolution in config file does not update the quantFactor of existing navmesh

When we changed the resolution in the config, if you open a map and then look at the navmesh, the resolution it shows is the updated one from the config (assuming you haven't overridden anything) ...