Unreal Engine Issues
Unreal Engine Issues
Single sided complex collision mesh collision blocks character movement from backside
UE - Simulation - Physics - Query - Nov 17, 2023Commenting out the branch in FTriangleMeshSweepVisitor::VisitSweep is a work-around.if (CullsBackFaceSweepsCode != 0) { if (VectorMaskBits(IsBackFace)) { // Don't cull the back face ...
Niagara using a Volume and Mesh renderer with a shared base material does not renderer correctly
UE - Niagara - Mar 26, 2024Using a shared base material with both a Volume and Mesh renderer causes the emitter to render as a glowing box at the scale of the bounding box. ...
Conditional crash when a DragAndDrop operation is done betweeen Data Layers.
UE - World Creation - Worldbuilding Tools - Data Layers - May 8, 2024A crash occurs to the engine as when we when have unreal as a backgroud task, and we try to drag and drop a layer to another by selecting the layer visibility button. ...
IsLocalController returning incorrect value when PIE listen server travels back to standalone map
UE - Networking - Jun 11, 2025In this situation where the listen server travels back to a level without listening, IsLocalController can return the incorrect value. After the NetDriver has been shutdown and destroyed, the pawn a ...
AnimBP warning word order mistake in Japanese
UE - Editor - UI Systems - Localization - Mar 24, 2016The warning ""variable name" に "BluePrint" という名前の変数はありません" in the output log within the AnimBP while the editor is in the Japanese language mode has an incorrect word order. "Blueprint"Blueprint sho ...
Opening a Sprite that is already opened in Property Matrix closes the Property Matrix tab
Tools - Dec 22, 2014Opening a Sprite that is already opened in Property Matrix closes the Property Matrix tab. This is inconsistent with other asset types; tested with Textures, Materials, and Blueprints, and in each c ...
Assertion failed: !EditReregisterContexts.Find(this)
UE - Gameplay - Jun 22, 2015Editor crashes if a blueprint has "Can Ever Affect Navigation" changed multiple times and is compiled. Crash link: [Link Removed] Frequency: 4/4 ...
Scale with Width on Landscape Splines offsets plane mesh on Z axis
UE - LD & Modeling - Terrain - Landscape - Apr 22, 2015If "Scale with Width" is set on a landscape spline with a plane mesh, the plane will offset on the Z axis. In most other cases, scaling along the z axis does not affect planes. ...
BP Struct's 'Bool variable' will reset back to it's default value on compile
UE - Gameplay - Blueprint - Mar 18, 2015BP Struct's 'Bool variable' will reset back to it's default value on compile. ...
WidgetBlueprint::DrawLines has broken AA on sharp cornered lines
UE - Editor - UI Systems - May 9, 2016WidgetBlueprintLibrary::DrawLines which calls FSlateDrawElement::MakeLines has broken AA for sharp cornered lines. ...