Unreal Engine Issues

Crash occurs when debug filter pop out tab is clicked while in line tab is present

There is a crash that is occuring when resizing windows with the debug filter popped out. The Debug filter that gets popped out is persistant and does not disappear when the the in line option appea ...

HLOD Build crashing when building nanite for mesh with 2 material having the same parameters

From Licensee: Catching the exception with debugger allowed us to find a list of materials on the hlod mesh on which the error occured and we were then able to link it to one of our meshes causing ...

Light Function Materials containing a Texture Sample and Rotator nodes will fail RHI Validation

Using a Light Function Material that contains a Texture Sample and Rotator nodes will cause RHI Validation to fail with the following error: LogOutputDevice: Error: Ensure condition failed: Bindings ...

SWorldPartitionEditorGrid2D causing editor to crash

Crash when moving actor on viewport with HierarchicalInstancedStaticMeshComponent.

Create ActorBP has StaticMesh is not assigned to HierarchicalInstancedStaticMeshComponent. Place this actor on the level, and bind the StaticMesh from the Detail tab and add the appropriate Instance ...

A crash can occur when modifying a user-defined struct asset that's indirectly accessed through a variable node.

If a user-defined struct-type variable is declared in one Blueprint, and that variable is then indirectly accessed in a second Blueprint through a reference to the first Blueprint, modifying the str ...

Crash when importing Alembic data with a large number of vertices if Merge Meshes is enabled.

Crash when recombining Value Pin after swapping Target Wild Card pin from a Vector2D to a Vector on a Set By-Ref Var node

This is not a regression. Tested in //UE4/Release-4.27 CL18319896 Crash when recombining Value Pin after swapping Target Wild Card pin from a Vector2D to a Vector on a Set By-Ref Var node.  ...

Crash in FNiagaraGPUInstanceCountManager::AddDrawIndirect when Android Vulkan Mobile preview platform is enabled

In the Android Vulkan Mobile preview mode, when multiple GPU niagara systems are visible and the user moves the camera around the level it can cause a crash, potentially caused by a race condition o ...

Editor crash after attempting to create layer info in new landscape window

Attempting to create landscape layer info from within the new landscape creation window crashes the editor. Workaround: create the landscape, switch to paint mode, create layer info in paint mode w ...