Unreal Engine Issues

Issues with global invalidation (MoviePlayer)

It was mentioned that the global invalidation should be toggled off during loading screen and subsequently restore the state after. A request was made for this dynamic behavior be part of the engin ...

FBoneContainer::MakeMeshPoseIndex crash (out-of-bounds array)

Geometry collection components report incorrect mass for character movement components

A player cannot move heavier GC objects even if we have a valid setup due to the GC not reporting the correct mass.  ...

Strip out disabled Pose Search Database animations during cook

Animations that are disabled in the Pose Search database still get loaded in a cooked build ...

Blueprint improperly marked dirty when it contains a latent node with a byte enum

In UE 5.4, when deleting actors in our levels, some blueprints will be mark dirty despite not having changed. We traced that down to FAssetRenameManager::CheckPackageForSoftObjectReferences. The af ...

Modifying FSuggestProjectileVelocityParameters::ResponseParam.CollisionResponse modifies FCollisionResponseParams::DefaultResponseParam

FSuggestProjectileVelocityParameters was introduced in 5.4 and has a FCollisionResponseParams member that's initialized as a mutable reference to FCollisionResponseParams::DefaultResponseParam. str ...

Preview Text display on Font Editor does not apply SubFontFamily setting

The Preview text display in the Font Editor does not apply the Sub-Font family settings. Only the Default Font Family and Fallback Font Family can be applied to the display. ...

Force Feedback has incorrect duration on iOS devices

The user also describes not being able to tell the difference between a force feedback value of 0.3 and 1,0 on iPhones Note: This is likely an issue somewhere in FIOSInputInterface::SetForceFeedb ...

Volumes with infinite or missing faces when importing .fbx file

UDN Description: We are having issues with the "Create Blocking Volume" tool on StaticMeshActors. When we create a convex blocking volume (any convex, rough or heavy), we often have volumes that ha ...

Crash in NaniteStreamManager when Nanite data fails to decode corrupt data from DDC

If Nanite data becomes corrupt in the DDC, the Editor may crash in FStreamingManager::InstallReadyPages() when the Pending.State is FPendingPage::EState::DDC_Ready but the resulting SrcPtr is null b ...