Unreal Engine Issues
Unreal Engine Issues
Sequencer causes 3DWidget on BP vectors to snap to Actor when active
zComponent - Archive - Nov 15, 2025When we have Vectors in BP with Show 3D Widget enabled, the Transform Widget would always snap back to the Actor after we move the 3D Widget in-world. [Link Removed] Removing the _DaySequenceActor ...
DFAO in 4.9 has significant artifacts on some machines
UE - Graphics Features - Jul 30, 2015Reported in this threadhttps://forums.unrealengine.com/showthread.php?78320-4-9-Horrible-DFAO-artifacts This looks to be a machine specific issue. I'd like to get some testing on different video c ...
Input Axis Continues to Fire After Standalone Window Loses Focus
UE - Editor - UI Systems - Slate - Feb 17, 2016When using an input axis for a task such as moving a character, losing focus on the standalone window while holding the key does not stop the axis from firing, which means the character will continu ...
Engine/Extras/MayaLiveLink not provided in install directory
OLD - Anim - Nov 19, 2018According to the Maya Live Link documentation, the zip file should be provided in the engine installation. https://docs.unrealengine.com/en-us/Engine/Animation/Live-Link-Plugin/Connecting-Unreal-Eng ...
Crash occur when using AddSpawnableFromClass with BlueprintGeneratedClass specified
UE - Anim - Sequencer - Aug 13, 2019BlueprintGeneratedClass is not based UBleupint. So the following code is failed. bool UActorFactoryBlueprint::PreSpawnActor( UObject* Asset, FTransform& InOutLocation) { UBlueprint* Blueprint = ...
Transform node which transforms a vector from mesh particle space to world space in vertex shader doesn't work on ue4.25
UE - Niagara - May 27, 2020Transform node which transforms vector from mesh particle space to world space in vertex shader always returns 0. In ue4.24, it works fine. This behavior has been changed in CL#12558699. Removing f ...
Details View loss of expansion state on container changes
UE - Gameplay - Blueprint Editor - Aug 3, 2020From the UDN post: When the new entry is added, the entire tree gets wiped out as a result of the CDO swap, and when these update methods run it leaves the tree in a default expansion state. (Effect ...
Creating/Destroying UWorlds rapidly can cause dangling pointers from UAutoDestroySubsystem
UE - Gameplay - Aug 10, 2020To summarize what I'm seeing there, a bunch of UObjects relating to that world have been destroyed but not all destructed. The UAutoDestroySubsystem pointer is still on the static tickable list, and ...
Debug information is sometimes missing when compiling with cl-clang
UE - Core - Cpp Tools - UnrealBuildTool - Aug 24, 2023Via UDN: As has been discussed previously here and in CL 20055361, debug information is sometimes missing when compiling with Clang. We've pinpointed this to debug information not being emitted fo ...
Details Panel Bug - Multiple external objects of same type share expansion state
UE - Editor - Verse Class Editor - Oct 5, 2023This is because expansion state is saved per class, and we are displaying multiple objects of the same class at the same type. The UniqueID we add when adding these objects via 'AddExternalObject' ...