Unreal Engine Issues

GAS: Creating an UGameplayEffectUIData blueprint will lead to a failed Data Validation

The logic for data validation on UGameplayEffectComponent expects it to be owned by a UGameplayEffect. Any Blueprint derived from UGameplayEffectUIData (child of UGameplayEffectComponent) fails this ...

GAS: Duration GameplayEffects applying same GameplayCue tag will on authority end all on-going GameplayCueNotifies when first cue expires

When multiple duration GameplayEffects apply a GameplayCue with the same tag, the network authority game instance (standalone & servers) will remove all GameplayCues with that tag from the AbilitySy ...

GAS: Crash on resizing FActiveGameplayEffectsContainer::AttributeValueChangeDelegates while executing a contained delegate

Game code can register listeners to when a GAS attribute changes value, for example by calling: AbilitySystemComponent->GetGameplayAttributeValueChangeDelegate(SomeAttribute).AddLambda(); These de ...

JumpForce replicated ability task not always cleaned up properly

See [Link Removed] for original report.  UAbilityTask_ApplyRootMotionJumpForce has a slightly different flow than other Root Motion Source ability tasks. It is the only one that allows EndTask to b ...

Lyra: GA_Melee uses disallowed NetMulticast RPC for melee impact sound

The melee gameplay ability GA_Melee uses a NetMulticast RPC which isn't allowed and causes a blueprint validation error: GA_Melee.uasset: Gameplay Abilities are not replicated to Simulated Proxies ...

Reference to GameplayTag isn't resolved correctly if the blueprint is loaded before the GameplayTag is registered

Gameplay Tag Query on Actor Component cannot be editted normally on instances

A GameplayTagQuery in an ActorComponent cannot be properly edited on instances of an actor with said component. There is a workaround, but the issue makes editing Tag Queries rather annoying, doubl ...

GAS PlayMontageAndWait: Server applies root motion with wrong scale at last montage tick

User reported: when playing an AnimMontage via GameplayAbility with the PlayMontageAndWait ability task that has a custom value for AnimRootMotionTranslationScale, (dedicated) servers can apply an i ...

Circularly Dependent Stacked GE Attrib Mods will be out-of-sync on Client/Server

Gameplay Effects can hold stale references to GameplayTags when switching Gameplay Effect Component type

Gameplay Effects can hold stale references to Gameplay Tags when the adding component is switched for a different type. The tags are serialised, and their presence can be confirmed with Reference Vi ...