Unreal Engine Issues
Unreal Engine Issues
Printing the result of the 'Get Move Ignore Actors' node will crash the editor
UE - Gameplay - Blueprint - May 6, 2015Printing the result of the 'Get Move Ignore Actors' node will crash the editor. The Licensee found the issue while exploring a workaround for this JIRA:https://jira.ol.epicgames.net/browse/UE-14734 ...
Doing a scene capture of a particle off screen on a thread other than the game thread in a packaged game asserts/crashes
UE - Niagara - Feb 15, 2018From licensee: When building and running the package on windows or other platforms, the game stops at an Assert when a particle is being rendered (off screen) from a thread other than the game thre ...
CitySample - Level MassCrowd - interactions with SmartObjects/ContextualAnimScene is broken in 5.5
UE - AI - Apr 9, 2025The 5.5 version of the CitySample project, particularly the MassCrowd scene, was not properly maintained. The previously working functionality of NPCs being able to sit on a bench is now broken. CAS ...
[CrashReport] Crash when painting foliage with a null static mesh
UE - World Creation - Worldbuilding Tools - Foliage - Jun 8, 2017This is a common crash occurring in the 4.16 release. User DescriptionsThis is the second time that it has vcrashed on me, ans it is really annoying. All I tryed to do was add a grass texure to a ...
[CrashReport] Access violation in UE4Editor_Engine!TOctree<TVolumeLightingSample<3>
UE - Graphics Features - Jun 14, 2017This is a common crash in the 4.16 release. The callstack for the issue is essentially the same as [Link Removed], however that issue had confirmed repro steps and was verified fixed for 4.16.0. A ...
[CrashReport] UE4Editor_Engine!UWorld::SetActiveLevelCollection() [world.cpp:6248]
UE - Gameplay - Sep 14, 2017This is a common crash that has been affecting users since 4.16. It may be unrelated, but a non-crash bug mentioned the same stack in [Link Removed] User DescriptionsI was creating a level and dra ...
Vertex Color Information Lost on Editor Restart
Tools - Apr 19, 2018This is a regression. In 4.19 and Main (CL 4008322), vertex color information does not save properly and data is lost when editor is reopened. Creating project from scratch instead of copying over f ...
LevelSequenceActorSpawner::GetLevelStreaming() fails to compare sub level names when running in Pie
UE - Anim - Sequencer - Sep 26, 2019The problem is in the function with signature "ULevelStreaming* GetLevelStreaming(FString SafeLevelName, UWorld& World)" within LevelSequenceActorSpawner.cpp at line 30. The problem is with the Safe ...
Cannot move movable components of actors if using drag if PIE or Simulate
UE - Editor - Workflow Systems - Mar 3, 2021If the actor is in sublevel and user play simulate or PIE, the actor can't be moved by drag gizmo. Even if under the same conditions, editing transform of detail panel work properly. So I guess that ...
Changing transform variable value of actor blueprint does not update child actor component using the set actor
UE - Gameplay - Blueprint - Dec 2, 2016If an actor blueprint contains a Transform variable, setting that blueprint as the child actor component (CAC) of another blueprint / blueprint instance then updating the transform variable in the o ...