Unreal Engine Issues

Collision channel settings are not recognized in Standalone

Object instances that override the parent blueprint's collision settings are recognized in PIE but ignored in standalone or when running from the command line with -game NOTE: This appears to only ...

Converting a modular character to a static mesh can result in a crash or in an asset with corrupted data

Property Editors fail to import text values for FKeys within array/set/map containers when the key is identified by some valid non-alphanumeric characters

The FKey structure represents a user action input such as a keyboard key, a mouse button/wheel, or a gesture in VR. For the keyboard, it can represent any pressable key, such as letters, numbers, sy ...

Client disconnected due to MissingLevelPackage in editor with Iris and server streaming enabled

When connecting to the server, if the client activates some local cells while the connection is still pending, ULevelStreaming::IsConcernedByNetVisibilityTransactionAck will return false. In this ca ...

Dynamic NavMesh disappears when loading/unloading SubLevels

A DynamicNavMesh within a NavMeshBoundsVolume placed in a SubLevel will disappear if loading/unloading another SubLevel that has completely nothing to do with the DynamicNavMesh. Using a setup with ...

iOS - Windows - Code projects fail to launch and package

Attempts to Launch On to or Package for iOS fail with: LogPlayLevel: Program.Main: ERROR: AutomationTool terminated with exception: AutomationTool.AutomationException: Unabled to build Project C:/Pr ...

The Remove-On-Break feature, set on Fracture Mode on Geometry Collections, stops shrinking and shows strange behaviors

The Remove-On-Break (ROB) feature, set on Fracture Mode on Geometry Collections (GC), was supposed to make the particle shrink until it vanishes. When the GC goes to sleep the shrinking stops and sh ...

Can't cook a subsequent release when the project uses World Partition.

A licensee reported getting errors when cooking a subsequent release. The bug is a side effect of CL44557776 which changed the behavior when dealing with generated packages in UCookOnTheFlyServer::G ...

ComponentOverlapMultiByChannel with a rotated simple collision PrimComp misses overlap vs. complex collision

UWorld::ComponentOverlapMultiByChannel and internally, the call to FBodyInstance::OverlapMulti, misses overlaps and blocking hits when the PrimComp's (the component used to test overlaps) mesh uses ...

Movie Render Queue Deferred Lighting(Detail Lighting) only outputs Lighting Only

This is not a regression. Tested in //UE4/Release-4.27 CL#18319896 Movie Render Queue Deferred Lighting(Detail Lighting) appears to only output Lighting Only.  ...