Unreal Engine Issues

Source control syncing in editor will sometimes not update changes made to assets

When using source control and attempting to sync the project, sometimes assets are not updated to the latest changes properly. This causes changes made to those assets later to override previous ch ...

BlueprintNativeEvent functions break on hot reload

A blueprint that uses a node for a BlueprintNativeEvent function breaks on hot reload. Blueprint cannot be saved or compiled. Compile error states: Error This blueprint (self) is not a HOTRELOADED ...

tvOS crash on startup with Shared Material Shader Code enabled

Enabling Shared Material Shader Code will cause a crash on tvOS From user: "We originally enabled Share Material Shader Code long before trying a tvOS build, making this crash tricky to debug. W ...

Actor with Camera Component UProperty causes ensure when PIE ends if replicating

If an Actor with a CameraComponent is set to replicate, ending a PIE session with 2 players will result in an ensure ...

Motion vectors not generating correctly in build

Also tried using “show VisualizeTemporalUpscaler” and noticed the frames that have missing motion vector data showed up as pops in the “show VisualizeReprojection” part of the visualizer. ...

Sound Mix Modifiers do not properly affect Sound Class

Sound mixers do not properly override variables within a sound class. This prevents users from being able to modify variables such as volume or pitch quickly and efficiently by using the push/pop st ...

AllowCommandletRendering D3D12 device crash

Variable Reset on Child in level

For a child instance inside of the level, the value of a parent int variable will reset if you add a new variable in the child and if there is a function in the parent that has the child as an outpu ...

Child Actor Component Not Destroyed When Parent BP Is Replaced in Scene

Having an actor in the level with a child actor component, replacing it with another copy of itself, and deleting the copy results in a Child Actor remaining in the world outliner, which cannot be d ...

Inconsistent warning with actor root component mobility setting

When an actor class sets the root component mobility to Static or Stationary, spawning an instance of the class (or child blueprint) during runtime will print a warning message in the output log of ...