Unreal Engine Issues

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 ...

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 ...

Editor-only blueprints like WidgetBlueprint are not added to cooked asset registry class hierarchy

Both the Asset Registry and Asset Manager look for all subclasses of UBlueprintCore and use that to search for blueprint classes and construct an inheritance hierarchy. This always works in editor b ...

Multiplying CompleCollision by inverse scale does not create a collision

If multiplying a mesh with ComplexCollision by inverse scale, the geometry may not be created on the mesh. This may depend on the assets of the mesh. In the sample example, the navmesh is not create ...

Undoing Level visibility change causes levels moves to wrong world origin offset

changing level visibility causes levels moves to strange position when using world origin shift

Selecting another level while the level is hidden cause the level moves to incorrect position. it occurs only when using world origin shift in world setting. ...

FPlatformMisc::RequestExit freezes app in IOS

See the UDN question (duplicated below). I think we need to better manage the lifetime of the event we use for synchronization here. We are experiencing an issue where when FPlatformMisc::Request ...

[Merge Actor] Lightmap UVs are broken after merging meshes

This issue occurs when merging static meshes that have multiple LODs. If they are using UV1 for lightmap index, after merging, the UV1 of the result for each LODs will all be differents, making the ...

iOS packaging does not seem to be able to exclude assets not in chunk0 when using ChunkDownloader

GetMouseX returns stuttering value if ShowMouseCursor is enabled

Showing the mouse cursor and holding down the left mouse button while dragging will cause the MouseX event to broadcast incorrect axis values.  ...