Unreal Engine Issues

World Composition "Add Adjacent Landscape Level" doesn't work correctly with landscapes that were created in the landscape editor (outside of world composition)

World Initialization is performed on Transition World if the client's process is halted at a certain point

A user reported an issue where, if a client hitches during world transition, the client will continue referring to the transition world instead of the newly created one. This will result in the clie ...

Garbage Collection Causing Noticeable Hitches

Garbage Collection is causing noticeable hitches on whatever interval it is run on. This is noticeable in the UE4 Profiler, as you will see a spike every X amount of seconds, depending on how often ...

Vive: Exiting VRPreview / VREditor mode can cause last stereo image to freeze in HMD

This seems to only happen when the editor has focus after closing VRPreview / VR-Editor. If you alt-tab have focus on another program it goes to SteamVR waiting room. ...

Self Shadow casts shadow on itself

I'm not sure which way this one should go, but there is inconsistency with how Self Shadow works when compared to the Direcitonal Light or Point Lights. When Self Shadow is enabled on a Directiona ...

Using Show Mouse Cursor and Ejecting Prevents Actors from Being Moved

When you have the mouse cursor set to show in game, if you use shift+f1 to unlock the mouse, eject, and then attempt to click and move an actor using the transform gizmo, you are unable to do so. S ...

Screen Aligned UVs render incorrectly in Stereoscopic

Textures with ScreenAlignedUvs do not render correctly in stereoscopic (on the Oculus Rift). Does not reproduce using the DK2. Found on 4.11 Binary CL-2923993 ...

Get mouse X/ Get mouse Y returns zero after the user clicks the screen and mouse is shown

If the user has set show mouse set to true and clicks the screen the Get mouse x and Get mouse Y will no longer return anything other than 0.0 Additional notes: This does not appear to be a regress ...

SceneCapture2D loses Blendable when Capture Every Frame is turned off even if Scene Capture is updated

Scene Capture 2D components lose access to the Blendable assigned to them if they are not set to Capture Every Frame at all times. If it gets turned off, the blendable can never be reapplied at run ...

IsValidOrFixable can be false even when IsValid is true in RawMesh.cpp

In RawMesh.cpp, there are two functions called IsValid and IsValidOrFixable. A user has reported that there may be an issue here where IsValid can be true while IsValidOrFixable is false. From look ...