Unreal Engine Issues

FPackageName::SearchForPackageOnDisk fails to find maps when using IOStore

This bug was discovered by a user who tried changing level through the 'servertravel' console command (HandleServerTravelCommand).  Debugging shows that FindFilesAtPathInIndex won't return anything ...

Command buffer failure rates increased on iOS 15 devices compared to earlier iOS versions

There is a licensee report that command buffer failure rates on iOS 15 devices have increased compared to earlier iOS versions, and the issue may be related to foregrounding or backgrounding. ...

CookAdditionalFiles - WriteSharedFile function that allows multiple packages to generate the same file

Dependency on [Link Removed], which specifies that CookAdditionalFiles should take a context object. Keep the existing WriteAdditionalFile function that is an argument to CookAdditionalFilesOverrid ...

CookAdditionalFilesOverride Context struct

virtual void UObject::CookAdditionalFilesOverride allows non-package files to be copied or created during the cook whenever a UObject of your class is in a package that is cooked. This is useful for ...

Create ini setting for DirectoriesToAlwaysStageAsUFSChunkRules to specify the chunks for UFS files.

Some plugins and projects are staging large amounts of AdditionalUFS files, and the only way to specify their chunk for streaming and optional install is using PakFileRules.ini. Add a setting in Ga ...

Add start and end-or-idle delegates for all cookmodes.

Plugin authors have requested a start and end hook for cooking so their plugin can load a database used during cooking. ...

Fix iterative cooks to keep track of CookAdditionalFiles and delete them when the package file that created them is invalidated

A licensee reports they are using the CookAdditionalFilesOverride function in UObject to add files to the project. This file is properly copied into the Staging area during Packaging, and is appropr ...

Niagara Mesh Renderer causes GPU hang on IOS 13.4.1

Inherited Blueprint component template data is not being validated on save.

UBlueprint::IsDataValid() does not currently check component templates inherited from a parent Blueprint class asset's SimpleConstructionScript; only the current class hierarchy is considered. Given ...

STileView EventOnListItemObjectSet function is not called if the TileView items are cleared and then the same exact items are re-added

Result: In UMG_TileViewItem, EventOnListItemObjectSet function Trigger once Expected Results： EventOnListItemObjectSet function Trigger twice ...