Unreal Engine Issues

Streaming Virtual Texture UDIN V Offsetting

UDIN virtual textures appear to have row 0 (U coordinate [0 - 1) swapped to the other side of the texture vertically. ...

APlayerController::FlushPressedKeys is (incorrectly?) called when the client viewport loses focus.

When focus changes an IE_Released event occurs for the W key (your character stops moving) due to UGameViewportClient::LostFocus calling APlayerController::FlushPressedKeys. Because of the R key pre ...

Screen Probes and Specular Firefly Flickering near screen edges

Lumen's rough specular indirect lighting buffer can have fireflies along the bottom and right edges of the screen. Also tested in //UE5/Main, CL: 35177423 ...

Relationship between joycon stick value and Deadzone

Setting the dead zone of Joicon causes the dead zone to be ignored in the direction of full X, -X, or Y, -Y. ...

GenerateProxyMesh causes incorrect transform in ISM using Scale

MeshVertex has been converted by component transform before being converted by instance transform. It is ( Vertex * ComponentTransform ) * InstanceTransform. I thought it has to be converted by (Ve ...

Widgets stick out from letterboxed player screen on 4.25

Note:   Clipping on letterboxed player screen works fine on 4.24.   This issue was brought in by CL#10541213. Here's a workaround TSharedPtr<SGameLayerManager::FPlayerLayer> SGameLayerManager::Fin ...

Building UE4Game fails during the build phase while packaging on Linux

This is happening only for Blueprint template projects. After I hit the issue on the BP project, I went back and tried a Code template project as well. I was NOT able to reproduce this with a Code t ...

Enabling Shader compilation via XGE for 4.18 Editor downloaded from Launcher doesn't work, prevents shaders from compiling at all, editor from loading in some cases

If you enable Shader compilation via XGE by setting r.XGEShaderCompile = 1 in ConsoleVariables.ini in 4.18 Editor downloaded from Launcher, it prevents shaders from compiling at all, and as a result ...

Unloading level during PIE leads to editor crash

Unloading level during PIE seems to lead to an editor crash. Most easily reproducible by enabling malloc stomp. ...

CSM receiver culling issue on Mobile