Unreal Engine Issues

Form Extended Structures will only destroy one mesh but not any attached

DESCRIPTION: While using form extended structures enabled for a Destruction mesh one of the meshes will be able to be damaged while any others attached will not fracture or damage at all. For exam ...

Actors in sublevels do not replicate to Clients after Seamless ServerTravel

Actors in sublevels do not replicate to Clients after Seamless ServerTravel. The user reporting this noted that "[...] UNetDriver::IsLevelInitializedForActor() keeps returning false even when the ac ...

[Interchange] Crash on asset re-import

We've started seeing a crash in editor when re-importing one of our assets. <pre class="ql-syntax">Assertion failed: (Index >= 0) & (Index < ArrayNum) [Link Removed] [Line: 783] Array index out of ...

LIVE: RENDERING: Movable Mesh does not receive shadows from Static meshes in static or stationary lighting

---------------------------------------------------------------------------------------------------------------------- Build: 4.1.0-2057451 Description: Movable meshes and blueprints set to cast n ...

MoviePipeline: Incorrect Caching of Min/Max World Delta Time

To test this issue: Create a C++ class WolrdTimeDilationDebugActor.h in your Project with the following code:// Copyright Epic Games, Inc. All Rights Reserved. #pragma once #include "CoreMinim ...

Installed builds of the Engine cannot package game targets with optional game features

The build system supports many types of flags that can be enabled in game-specific Target.cs files to enable things like logging in shipping, target-specific overrides like custom config, or enablin ...

Dataprep crash when creating a parameter from a datatable asset or any asset

Using Tortoise SVN causes the engine's source control to be inconsistent

If a user decides to use Tortoise SVN, the error messages given for needing to have things checked out is inconsistent. If there is a blueprint which references another blueprint, and the reference ...

Packaged Game crashes when using blend space that was added from the context menu

Blendspace created within an animation blueprint from the context menu throws an assertion when packaged and ran. Only occurs in packaged projects. The blendspace will work correctly in PIE, and st ...

Rotating a button in UMG and moving it to the edge of the canvas causing incorrect clipping

When rotating a button in the UMG blueprints and then moving through the edge of the canvas panel it causing the button to clip as though it was never rotated. Update: This also happens when placi ...