Unreal Engine Issues

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 ...

Anim Slot Manager Options Disappear When "Use Small Tool Bar Icons" is Enabled in Editor Preferences

When Use Small Tool Bar Icons option is checked in Editor Preferences, the icons for Save, Add Slot, and Add Group in the Anim Slot Manager are not longer visible but register as still there and rem ...

CharacterMovementComponent causes the Character to slide when jumping on moving objects

When the CharacterMovementComponent makes the transition from falling to walking, it retains the forward velocity it had while falling. When the character lands on the moving object, its new velocit ...

CSM receiver culling issue on Mobile

5.5.4 - Morph targets 1 frame offset

Morph targets work! Yay! But found another issue. Basically import an fbx with multiple animated morph targets applied to it. The morph change shape over 1 frame and for some reason in 5.5.4, there' ...

Canvas Render Target 2D doesn't get alpha mask when rendering with ES3.1

The Alpha Mask on a Canvas Render Target 2D no longer appears when rendering with ES3.1. This is a regression from 4.24.3 (CL-11590370). This was reported and tested in 4.25 Preview 7 (CL-12759524) ...

Import with New File option for Anim Sequences does not function

The "Reimport with New Source" functionality is currently not functioning in the Editor. When selecting the option with a clearly edited Anim, it is not updated. There is no message in the Output Lo ...