Unreal Engine Issues

Running Lyra with a Startup Movie causes a crash

Adding a startup movie to a Lyra Starter game project will cause a crash in a packaged build.  Full callstack is attached ...

Decal material is drawn twice when using mesh decals in mobile forward

For desktop renderers, deferred and forward are both one draw.[Image Removed][Image Removed] ...

GPU ribbon links can occasionally fail

Sometimes GPU ribbons will link between one another like this, checking in the debugger you can see that the RibbonIDs are different. [Image Removed] ...

Added Scene Components are Missing Billboard Nodes

Newly added scene components to blueprints will have no billboard sprites, and thus cause the actor to be invisible in the editor unless other visible components are added. They exist on the default ...

[Sequencer] Setting additive transform keyframes on Actor Blueprints (using S hotkey) causes Actor to pop

See attached gif for popping behavior. The issue does not occur if using the Enter hotkey or clicking the Add Keyframe button. The issue also does not occur on static or skeletal meshes.  ...

Unloading a level instance by data layer creates empty folders in the top level of the outliner

Inconsistent media texture new style output state across the engine

A simple search for `NewStyleOutput = true` will reveal the many instances where this flag is already forced on, including media plates and media bundles. This however means that we have incompatib ...

Movie Scene Capture - DX12 Render Artifacts and Delay

If using the Legacy renderer (Movie Scene Capture) with DefaultRHI DirectX12, there's new delay and also some frames get weird artifacts.   However, the delay and artifacts do not appear when using ...

Editor becomes unresponsive when selecting BP_FirstPersonChracter0 while Playing in Editor with specific settings

This is a regression. Testing //UE5/Release-5.1 CL23901901 When selecting BP_FirstPerconCharacter at run time in a project that has C++, Quality as Scalable, and Ray Tracing enabled the editor free ...

Spawn and Register Tab and Get ID Produces Unbounded Length IDs

Spawning Editor Utility Widgets via Spawn and Register Tab and Get ID inside another widget creates unbounded length IDs that get progressively longer with each subsequent spawn, as the ID is append ...