Unreal Engine Issues
Unreal Engine Issues
Undo and ConstructionScript break the AttachChildren array
UE - Gameplay - Components - Nov 14, 2019Undo fills AttachChildren array with null by the undo serializer. After that, a construction script tries to remove child components from parent component's AttachChildren but it can't find its poi ...
Anim Graph will hang if the Draw Debug Sphere and Set node are connected and compiled
UE - Runtime - Anim BP - Jun 8, 2023anim blueprint hangs when compiled. Probably a cyclic issue when compiling. A workaround is to add a delay of any time between the set node and the Draw Debug Sphere node. Repros in the following v ...
Unable to affect setting cubemap blend in skyLight and reflections on transluscent materials
UE - Rendering - Architecture - Oct 17, 2023Attempting to blend SkyLight Cubemaps via the SetCubemapBlend function to blend between different Cubemaps to make the changes seamless is not reflected. As a workaround, in LumenTracingCommon.ush, ...
Objects animated in Sequencer fail to trigger collisions against stationary characters with character movement components
UE - Gameplay - Player Movement - Oct 22, 2024When an object, such as a cube, is animated in sequencer and that object's path intersects a stationary character with a character movement component, the object will pass through the character with ...
Pilot actor no longer generates undo transactions
UE - Editor - Workflow Systems - Jan 22, 2024The piloting feature in the editor viewport is not undoable with Ctrl+Z It also does not cause the actor to become dirty so any changes during piloting are lost and not saved (user also not prompted ...
Transform gizmo is not working when nearclipplane in project settings > Engine > General settings is 0.00001
UE - Graphics Features - Mar 23, 2020Setting near clip plane like 0.00001 makes unable to move with transform gizmo. if user set value to 0.0001, it is no longer reproduced. it should clip value like 0.00001 ...
Launching the editor with -d3ddebug and enabling LOD Coloration mode gives D3D11 DEVICE_PSSETSHADERRESOURCES_HAZARD warning
UE - Graphics Features - Nov 3, 2015Launching the editor with the "-d3ddebug" command line option and then enabling the "LOD Coloration" view mode (under "Lit") results in the following D3D warning: D3D11 WARNING: ID3D11DeviceContext ...
Layered destructible meshes do not simulate correctly
UE - Simulation - Physics - Destruction - Aug 10, 2015Layered destructible meshes do not simulate in the same way between UE4 and PhysX Lab. The observed issues are: 1) After first fracture no more damage is applied 2) Areas seem to react differently ...
Geometry in hidden Layer unhides if moved in the viewport
Tools - Mar 3, 2017Geometry that is hidden in a layer, becomes visible after being moved in the viewport. The layer stays hidden, and if a cube is placed in the layer, it also remains hidden. Moving a cube that is hid ...
Post increment operator is not overridden for data structure iteration
UE - Foundation - Core - Mar 21, 2017Attempting to use a post increment operator in a TMap or TSet iterator will fail to compile with error shown in callstack field. This is due to the post-increment operator not being overridden in M ...