Unreal Engine Issues

Rifles are offset in Display 1.15 when opening Content Examples Animation map

REGRESSION: YesWORKING: 3172292 (4.13.2)BROKEN: 3177600 (4.14) In the Content Examples Animation level, at Display 1.15, the rifles are offset from the character's hands for two of the skeletal mes ...

Canvas Render Target 2D doesn't get alpha mask when rendering with ES3.1

The Alpha Mask on a Canvas Render Target 2D no longer appears when rendering with ES3.1. This is a regression from 4.24.3 (CL-11590370). This was reported and tested in 4.25 Preview 7 (CL-12759524) ...

Regression - Inherited component properties on actor instances of derived blueprints are silently reset to defaults when the blueprint is compiled, causing data loss

In certain circumstances, when a derived blueprint is compiled, all properties from its inherited components can be silently reset to defaults on instances placed on the current level. This results ...

Light does not affect landscape splines in raster pipeline (non-RT)

Crash launching project with Compat.MAX_GPUSKIN_BONES=75 and Preview Rendering set to Shader Model 5

Crash occurs when the user launches a project with a +75 bone skeletal mesh actor in their scene with the Compat.MAX_GPUSKIN_BONES=75 config change, and the default preview render is Shader Model 5. ...

[CrashReport] Assertion failed: TaskDataArray.Num() == Exporter->VolumetricLightmapTaskGuids.Num()

This is a trending crash coming out of the 4.18 Previews. Users have not provided any descriptions of their actions when the crash occurred, but at least two of the affected projects are being creat ...

Variables replaced with -1 after jumbling in details pane when one actor is selected and another blueprint compiled

Variables replaced with -1 after jumbling in details pane when one actor is selected and another blueprint compiled. De-selecting Actor_1 sets variables back to correct value when selected again. ...

Xcode 8.3.2 fails to successfully build 4.15.1 from source code

Attempting to build 4.15.1 from source code using Xcode 8.3.2 currently results in the build failing due to warnings that occur in fbxsdk, AlembicImporter, and MetalRHI. ...

Getting Vector Parameter Values from a Dynamic Material Instance with 1 or more vector parameters returns an empty array

This is not a regression. Tested in //UE5/Release-5.0 CL20979098 The array for Vector Parameters isn't getting populated when called from a Dynamic Material Instance. ...

"Working with Components on Actors Part 1" mentions incorrect behavior about adding component replaces root

In the Blueprints > Working with Components on Actors Part 1 tutorial, there are steps that say that when placing a component in an empty actor, it will replace the root component. This is old beha ...