Unreal Engine Issues

Parameters show up in material instances even if they're not supposed to be exposed

In this case, I've added inputs to a material function. That material function input uses a parameter as it's default value. [image: Inline image 1] When referenced in the shader[image: Inline ima ...

While using Rootmotion with blendout, the velocity will always fallback to 0.

We skip CalcVelocity for CharacterMovement while HasAnimRootMotion, and we do ExtractedRootMotion.MakeUpToFullWeight() anyway.  This caused problem that when we blend out a rootmotion anim, it will ...

Calling TearOff then Destroy on an actor results in client actor also being destroyed

When calling TearOff followed immediately by Destroy, the channel will be closed with the reason that the actor was destroyed, so the actor will be destroyed on the client as well. In the UDN linke ...

Chaos-enabled projects will disable Post Process Volume with sphere tessellation of 4 or higher

Update warning in FActiveGameplayEffectsContainer::ApplyModToAttribute to consider batching

The ModcallbackData won't be consumed while applying stacked Gameplay Effects if the updates are being batched. This triggers a false warning in FActiveGameplayEffectsContainer::ApplyModToAttribute. ...

Blueprint RepNotify functions cannot include a parameter representing the old value of the property

In C++, a replicated property's RepNotify function can include a parameter that represents the property's value before the new replicated value was applied. In blueprints, RepNotify functions are no ...

Drop Down menus displaying the editor instead of a list of options

Drop Down menus displaying the editor instead of a list of options. See attached screenshot. ...

Duplicating an actor with a blueprint bound delegate behaves unexpectedly

When the trigger is duplicated, the contents of its OnActorBeginOverlap MC delegate are copied, which contains a reference to the BP actor that added the binding to the original trigger. Marking th ...

Infinite loop in UAnimSequence::ExtractRootMotion when sampling backwards

When sampling root motion backwards we can hit an infinite loop in ExtractRootMotion. This happens if the initial sample time + negative delta is off the end of the animation clip. In that case FA ...

Changing VectorParam channel names in Material Layer do not propagate to Material Instances