Unreal Engine Issues

Display: Missing cached shadermap for Preview:<MaterialName> in PCD3D_SM5, Default, SM5

When applying a Landscape Layer Blend of textures to the Material Base Color, the preview does not update or shows black instead of how the material is supposed to look. When you disconnect the lay ...

Assertion failed: (Index >= 0) & (Index < ArrayNum) when importing large Alembic file

Regression testing done on //UE4/Release-4.27.2 CL-18427296 and this issue did occur. [Link Removed] [Link Removed] Below is snips of customers description and proposed workaround:Importing alembi ...

Rarely, unmodified Niagara will cause diffs and bloat the patch.

Attached is a project that picks up Niagara from the content sample. The probability of reproduction is about 1/10. The simpler the project, the lower the reproduction probability. I am attaching ...

Cannot touch at top of screen after input japanese on UEditableTextBox on IOS

[translated comment from licensee] This issue can be found in a IOS project using the Integrated Keyboard. it occurs when using a Japanese keyboard on EditableTextBox. There is no problem with Engl ...

Binary build cpp project Mac build results in "BUILD FAILED: AddBuildProductsFromManifest: .../MyProject/Binaries/Mac/UnrealEditor-MyProject.dSYM was in manifest "/Users/jack.porter/MyProject/Intermediate/Build/Manifest.xml" but could not be found."

Crash when reimporting fbx with import mesh LODs on

When saving an emitter in the Niagara system as an asset, it crashes when overwriting an existing emitter.

ListView crashes when GlobalInvalidation is enabled.

Reverting to the fix in [Link Removed] (CL#17788567) will avoid the crash. ...

Closing editor after quitting a standalone game causes a crash.

The editor will produce a crash most of the time when closing editor after quitting a standalone game. This is a regression due to it not occurring in 4.26. ...

Volumetric Clouds appear in front of foreground objects in the Right Eye of VR Headsets

It seems that volumetric clouds in the background appear in front of objects in the foreground in the right eye of a VR headset. I also tested in //UE4/Release-4.26 @ CL 15973114 and the results wer ...