Animation viewports can cause debug print messages to be purged

UE - Anim - Rigging - Control Rig - Jan 11, 2024

A change was made a while back so that control rig debug print messages would be displayed in the animation editor preview windows.  This is done via calling UEngine::DrawOnscreenDebugMessages from ...

Recentering on Meta Quest doesn't work

UE - Platform - XR - Jan 10, 2024

This is a serious issue as it's causing applications to fail certification on the Meta Quest store ...

Bug with setting the ChildActorClass in ChildActorComponents in Blueprint

UE - Gameplay - Blueprint - Jan 10, 2024

It's impossible to set it back to None. Also, if the original blueprint had something set in ChildActorClass, it will be impossible to set a placement of it to None. I looked at it briefly in the de ...

Chaos Vehicle does not make them CCD

UE - Simulation - Physics - Jan 10, 2024

AWheeledVehiclePawn class tries to use CCD in the constructor, but Mesh->BodyInstance.bUseCCD = true this code does not work to activate CCD because Physics Assets could not be available at this ...

Regression: FGameplayTag and FGameplayTagContainer pin value modification is not undo/redoable

For nodes with an FGameplayTag or FGameplayTagContainer pin, when changing the tag value (Pin->DefaultValue) and triggering Undo/Redo, the pin modification is not undone. Rather, it undoes the previ ...

Arithmetic assignment operators (e.g. +=, *=) in Niagara inputs are applied twice .

UE - Niagara - Jan 9, 2024

Arithmetic assignment operators seem to be applied twice when committed in the Niagara stack.  This occurs when entering *= 2.0 for example into a float input. This may be the result of the SNiagar ...

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

UE - Gameplay - Gameplay Ability System - Jan 9, 2024

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 ...

Some debug modes do not work in PIE

UE - Platform - Mobile - Jan 9, 2024

It looks like the output of the debug pass is ignored, and the final output from the last frame before the pass was enabled is displayed instead. If the pass is modified to return a different textu ...