GAS: RemoveReplicatedLooseGameplayTag on unadded tag causes it to be replicated

UE - Gameplay - Gameplay Ability System - Nov 17, 2022

A UDN user found that calling AbilitySystemComponent->RemoveReplicatedLooseGameplayTag(TagToRemove); while the gameplay tag was not in the TagMap, will create an entry for it with count 0, see ...

GAS and single process PIE: modifiable static variables accessed by server and client

UE - Gameplay - Gameplay Ability System - Nov 16, 2022

See: UAbilitySystemGlobals::HandlePreLoadMap GAS features static variables that are modified by both server and client, thus result in issues in single process PIE where they access the same memory ...

GAS: UGameplayEffect tags async loading race condition

UE - Gameplay - Gameplay Ability System - Oct 12, 2022

User reported game thread and async loading thread accessing a UGameplayEffect property at the same time:Game thread having loaded a GameplayEffectA and in its PostLoad() updating the property Inher ...

Gameplay ability blueprints cannot be debugged in multiplayer

UE - Gameplay - Gameplay Ability System - Aug 19, 2022

The object filter in the blueprint debugger can be used to filter breakpoints to a specific instance of an object. This is important for multiplayer because there will be multiple versions of the sa ...

GAS: Mixed replication mode and error in MinimalReplicationTags code

UE - Gameplay - Gameplay Ability System - Apr 6, 2022

We're on 4.25.4. We recently turned on mixed mode replication for GAS, which seems to work fine and reduce bandwidth as expected. However one of our unit tests started failing with this error messag ...

Gameplay Effect Modifiers with Target Tags are Applied Incorrectly

UE - Gameplay - Gameplay Ability System - Mar 9, 2022

If you have a Gameplay Effect that uses an Attribute Modifiers, and this modifier has Target Tags specified, the modifier is applied unexpectedly:Adding a Required tag on the Target, the modifier do ...