Unreal Engine Issues

Renaming a level by WorldPartitionRenameDuplicateBuilder fails if the level contains GroupActor with non-spatial actors

Referece to the source level should be fixed by FReplaceObjectRefsArchive, but it is not working because ArIsModifyingWeakAndStrongReferences is not set. It can be fixed by setting the flag.class FR ...

[Interchange] Bone name space are replace with underscore, legacy fbx rename with dash

This bug is critical since it can broke bone name reference between [animations, physics asset, curves, ...] and skeletal mesh bone name ...

When cutting and pasting an actor on the outliner, the actor name becomes generic name (StaticMeshActor#).

Clicking "X" close button when prompted to convert a project will still convert the project

The prompt window that appears when a project is converted from one engine version to another will "approve" the conversion even if the red "X" is pressed to close the prompt window. ...

Fonts that are really tall can clip outside of the text block (potentially cutting off some of the lettering)

If the user tries to use a font that is really tall the font may get the top portion of the text clipped off. ...

NavigationSystem can end up with NULLs in NavDataSet after user deleting navigation data instances in the editor

Attempting to rename function bound to delegate or rebind delegate to new function will fail

Changing the name of a function that is bound to a delegate, or attempting to bind a delegate to a second function, causes the new/changed function to not be called when the delegate is triggered. ...

Copying a copied 5.0 project into 5.1 does not rename project folder as expected

I was able to reproduce this issue 4/4 times, and initially started in version 4.26 to determine if this issue was a regression or not. When copying a 4.27 copied project into 5.0 or 5.1, the 4.27 w ...

Volumetric fog rendering gets cut off at the apex for some spot lights when viewed from certain angles

Fix is found in licensee’s pull request:https://github.com/EpicGames/UnrealEngine/pull/10333/files ...

LLM: Delete LLM_IF_ENABLED if it is no longer a performance benefit, or convert all allocs and frees to use it if it still is.

The macros LLM and LLM_IF_ENABLED behave identically but are slightly different from a performance standpoint. For consistency all allocs and frees should use the same one. Measure the cost of a co ...