Unreal Engine Issues

ReplicatedUsing stops getting called after setting a value to nullptr.

Eventually, the ReplicateUsing function called out for a UPROPERTY is no longer being called. After investigation, it appears that the data is making it from the Server to the Client, but that the d ...

Inclusive Nativized Blueprints slower than Non Nativized Blueprints in packaged project

When nativizing blueprints the packaged build of the project runs slower than a non-nativized version of the packaged project. Found in 4.22 CL#7053642 Reproduced in 4.21 CL#4753647, 4.24Main CL#7 ...

When copying category properties, all the EditConst flags are not checked. This overrides variables that should not be written.

If you create two actors that have the same structure of variables in a category, and you try to copy the category variables of one actor into the other, variables that have ReadOnly/EditConst speci ...

The Open Level command is causing Android devices to freeze up

If you use the Open level node in the newest promoted build, once the project is deployed to an Android device, when triggered with a UMG, the project will freeze and be unplayable. Issue does not ...

StaticMeshActors spawned at runtime are not visible until a property has been changed and also have no collision unless set to moveable

Spawning a StaticMeshActor at runtime results in the StaticMeshActor not being visible until a property has been changed, such as the material for the Static Mesh. The spawned actor will also have n ...

Deleting the code files for a custom component from a project will result in an Engine crash when trying to open any Blueprint using that component.

Adding a custom component to a Blueprint and then deleting the code class defining that custom component from the project will crash the Editor any time you try to open a Blueprint containing that c ...

GameplayCueNotify Actors not removed on Clients upon duration-based GameplayEffect expiration

Distant mesh / vista have visible Lumen bounces

Objects far outside of the Lumen Scene don't temporally accumulate screen traces, leading to heavy flickering. It appears that the temporal reprojection is failing when comparing the depth in "Scree ...

Nested component subobject visualization and defaults editing is not working properly.

Currently it is only partially possible to edit nested component subobjects, but not in a way that's consistent with how top-level component subobjects are edited (both Blueprints and IWCE). This is ...

Vertex Animation anti-aliasing improvement

A licensee has reported that their vertex animations are leaving a lot of be desired with anti-aliasing. Specifically using vertex animated meshes can leave aliasing remnants behind while it's shift ...