Unreal Engine Issues
Unreal Engine Issues
Animation Blueprint with Shared Transition "marked" dirty
OLD - Anim - May 14, 2019Animation Blueprints which contain a shared transition used to transition between two animation states will be marked as "dirty" every time the blueprint is compiled and re-opened. ...
OnHit not firing when capsule collider passes onto very close and same height mesh
UE - Simulation - Physics - Sep 10, 2019When a capsule collider passes from the top of one piece of geometry to another that is very close the OnHit event doesn't fire. I have attached a project that demonstrates the issue in 4.23. A vid ...
Lyra - attribute sets of characters placed on world partition boundaries break in PIE
UE - Gameplay - Gameplay Ability System - Jun 28, 2023When placing an instance of ALyraCharacterWithAbilities on the map on the boundary between world partition cells, it fails to take damage in PIE. The expected attribute sets (HealthSet and CombatSet ...
Renaming a level by WorldPartitionRenameDuplicateBuilder fails if the level contains GroupActor with non-spatial actors
UE - World Creation - Worldbuilding Tools - World Partition - Oct 24, 2023Referece to the source level should be fixed by FReplaceObjectRefsArchive, but it is not working because ArIsModifyingWeakAndStrongReferences is not set. It can be fixed by setting the flag.class FR ...
Local Exposure can cause large variations in PreExposure under certain conditions
UE - Graphics Features - Sep 16, 2025PreExposure is influenced by LocalExposure in PostProcessEyeAdaptation.cpp:1265. It appears when the scene is particularly dark and using manual exposure, the LastAverageLocalExposure can read a lar ...
naming box collision in player character renames overlap begin event in actor calling player character
UE - Gameplay - Blueprint - Jan 28, 2016naming box collision in player character renames overlap begin event in actor calling player character ...
Same-named variables of other classes listed as references in blueprint
UE - Gameplay - Blueprint - Aug 14, 2015If a variable in a blueprint is the same name as a referenced variable from another blueprint, using "find references" on the local variable will return references to both the local and the external ...
'Is Case Sensitive' option on the Switch on String node doesn't toggle correctly
UE - Gameplay - Apr 22, 2015'Is Case Sensitive' option on the Switch on String node doesn't toggle correctly. User Description: The "Is Case Sensitive" option when you use a switch on string function in blueprint doesn't wor ...
Retargeting Root Motion not working in UE4.10
OLD - Anim - Nov 24, 2015Retargeting root motion results in the target animation appearing to "slide" on the ground or "hover" as if hanging from the pelvic bone. This has been reported to be fine in 4.9 but multiple users ...
MoviePipeline Project Settings can't refer to Plugin classes
UE - Anim - Sequencer - Feb 12, 2022A workaround might be to use the CDO of your plugin to reach out to the Editor settings and assign itself to the fields you want. This removes the users ability to choose between multiple options. ...