Unreal Engine Issues
Unreal Engine Issues
Composure DepthElement Not Producing A Picture
zComponent - Archive - Sep 21, 2020The user tried to use the composure pipeline and followed what is written in the Documentation. All the elements and nodes written out in the documentation worked as expected with the exception of t ...
[AI] Unable to set StateTree asset to use in MassStateTreeTrait
UE - AI - StateTree - Dec 15, 2022You can no longer set the StateTree asset to use in a Mass Entity Config data asset. The list shows as empty even when making a new StateTree specifically using Mass Behavior schema. Attempts to add ...
'Moved' event pin doesn't trigger on the 'Input Touch' node correctly
UE - Editor - UI Systems - Apr 8, 2016'Moved' event pin doesn't trigger on the 'Input Touch' node correctly Regression: This does not happen in 4.10.2. The 'Moved' pin triggers at all times when the mouse-button is held and the mouse i ...
GameplayTagQuery AutoDescription not refreshed after GameplayTag redirect on load
UE - Gameplay - Gameplay Tags - Jan 21, 2026FGameplayTagQuery does not refresh its cached AutoDescription after GameplayTag redirects are applied during asset load. As a result, after renaming a GameplayTag and restarting the editor, the Game ...
Deadlock during cooking or editor in URigHierarchyController::AddElement on task thread while GarbageCollection occurs on gamethread.
UE - Runtime - Animation - Apr 15, 2026In URigHiearchyController::AddElement (and other functions), arbitrary delegate code is called while holding Hierarchy->ElementsLock, through the Notify function. URigHierarchy::AddReferencedObject ...
Crash when element is added to a map variable with unhashable key
UE - Gameplay - Mar 21, 2017Crash when element is added to a map variable with unhashable key. An error is thrown on compile but an element can still be added under the Details panel of the variable. Crash Reporter: [Link Rem ...
ControlRig & Sequencer: FindControlRigs returns rigs even if their track have been removed
UE - CAPT - Anim in Engine - Jun 5, 2024Constraint Actor to Rig with Editor Utility Widget is working for the first time adding to the Sequencer. However if it was deleted and added to Sequencer again, run Scripted Actor Action shows Err ...
Warnings appear when playing a Sequence while in PIE
UE - Anim - Sequencer - Apr 24, 2017While executing [Link Removed] Sequencer - Recording - Basics - Template – attempting to view a recorded sequence while in PIE triggers a set of warnings each time the play button was pressed. LogUO ...
Dangling pointer + mem corruption related to OwnerLastRenderTimePtr
UE - World Creation - Worldbuilding Tools - Mar 16, 2026We've been seeing asserts and crashes related to OwnerLastRenderTimePtr. We've traced this to the mentioned pointer ending up dangling after using UActorComponent::Rename() on primitive components t ...
ETriggerEvent::Canceled is not set when the player controller is set to "UI Only" in Enhanced Input
UE - Gameplay - Input - Apr 20, 2022From the UDN:When setting the PlayerController input mode to "UI Only", all game inputs are blocked/frozen to their current state, and release (ETriggerEvent::Canceled) is not called on them. Any in ...