Unreal Engine Issues

Ledge Movement Stuck (CheckLedgeDirection is always returning true)

The issue appears to that CheckLedgeDirection almost always returns true, which returns the leftward side step. This is correct for the leftward direction, but is not valid for the rightward directi ...

Movie Render Queue shows different behavior when a sequencer window is opened

When running Movie Render Queue job for a sequence which uses FKControlRig and a sequencer window is opened, Track->ReplaceControlRig() is called every single frame, not only an initial frame. This ...

Error using Panoramic Capture Plugin with an absolute path

When using the Panoramic Capture Plugin to render 360-degree images, it is possible to specify the output directory of the generated files. This can be any absolute path, or any relative path starti ...

SplineMeshActors all share the first spline placed rather than their own spline when using the mobile renderer.

SplineMeshActors all share the first spline placed rather than their own spline when using the mobile renderer. This was first reported in this UDN: https://udn.unrealengine.com/s/question/0D54z0000 ...

Single sided complex collision mesh collision blocks character movement from backside

Commenting out the branch in FTriangleMeshSweepVisitor::VisitSweep is a work-around.if (CullsBackFaceSweepsCode != 0) { if (VectorMaskBits(IsBackFace)) { // Don't cull the back face ...

Duplicate child actor created on client in editor

This seems to be related to the fix for [Link Removed]. Part of that fix made sure that the child actor component recreates the child actor when GIsReconstructingBlueprintInstances is true, as previ ...

In-editor hitch when deleting one actor in a world with many loaded actors

When editing a level with many actors (1000+), deleting an actor results in a noticeable hitch: the editor becomes unresponsive for seconds. This hitch becomes longer the more actors are loaded and ...

GroupActor has incorrect streaming bounds when created in level instances

WP level instance runtime settings affect streaming generation

If a level instance uses different runtime settings then it can override the main WP's runtime settings with UWorldPartitionRuntimeSpatialHash::ApplyCVars Runtime settings:GRuntimeSpatialHashUseA ...

Material previews in the content browser display the default material checkerboard

Occasionally material and material functions previews in the content browser are displayed with the default material checkerboard, perhaps due to shaders not being compiled. UDN users are also expe ...