Unreal Engine Issues
Unreal Engine Issues
Python cannot spawn object when running in Ueditor-CMD
UE - Editor - Workflow Systems - Dec 7, 2018It is probably link to the fact the function try to access so GUI object that are not accessible in CMD EditorLevelLibrary.spawn_actor_from_object should work in commandlet ...
Beam Emitter exhibiting lagging behavior when attached to Camera in BP
UE - Gameplay - Sep 26, 2014Beam Emitter attached to a camera in a blueprint is showing lagging behavior at source and target locations ADDITIONAL NOTES: Have tried to eliminate the lagging through locking source and target w ...
FP_FirstPerson and FP_FirstPersonBP missing when adding feature packs
Docs - Samples - Dec 16, 2019When adding the first person template (bp or code) as a feature pack, an error occurs stating "Unable to read file" and a warning "failed to import". ...
Launching a specific UDN Project with Vulkan Support enabled crashes launching on Quest
UE - Platform - XR - Jul 30, 2020When attempting to run the attached Project submitted from UDN, it will crash on launch. If Vulkan support is disabled, the Project will run as expected on Quest. This issue DOES NOT appear to repro ...
When the value of the TMap variable of the child blueprint is changed and compiled, it will restore to the default value of the parent blueprint.
UE - Framework - Blueprint - Sep 1, 2021For TMap variables of type struct created in blueprint, if change the default value in child blueprint and compile, it will restore to the default value of the parent actor. This problem does not o ...
IAnimationDataController::Evaluate implementations do not account for compatible skeletons
UE - Anim - Runtime - Aug 25, 2023Looks like we are missing code in the Evaluate methods similar to what we are doing in DecompressPose to account for compatible skeletons. The easiest way to repro is in a standalone game because ...
PCG causes crash when UGrassInstancedStaticMeshComponent is set as a mesh entry for the static mesh spawner node
UE - World Creation - Procedural Tools - PCG Component - May 16, 2024PCG causes crash when UGrassInstancedStaticMeshComponent is set as a mesh entry for the static mesh spawner node. ...
Baking lighting on Nanite landscape crashes the editor
UE - Graphics Features - May 23, 2024When static lighting is baked using CPU lightmass for a nanite-enabled landscape it causes an editor crash with this assert: ...\Lightmass.cpp] [Line: 546] Attempting to add the same material twice ...
Improve extra state debug box when net debug drawing
UE - Networking - Aug 28, 2024With net debug drawing enabled, an extra debug box is drawn around some actors to indicate if the actor is always relevant or if it is distance culled. However, the strange size of this box makes ne ...
Add Substrate Material Support to Lumen Performance Overview
UE - Graphics Features - Substrate - Feb 10, 2025There is a discrepancy when inspecting Substrate materials in the Lumen Performance Overview. Compared to viewing non-Substrate materials the overview show all surfaces in red indicating that Lumen ...