Unreal Engine Issues

TMatrix<T>::InverseFast() ensure when running URootMotionModifier_SkewWarp::WarpTranslation().

URootMotionModifier_SkewWarp::WarpTranslation() uses InverseFast() within a block of code that is only executed if DeltaTranslation is not nearly zero. The ToRootSyncSpace transform the code builds, ...

Error when Compiling an AIController Blueprint Class with an AIPerception Component

An error populated the output log when Compiling an AIController Blueprint Class with an AIPerception Component. This is not a Regression, as it Occurs in //UE4/Main. ...

Reset Instance Changes to Blueprint Defaults does not reregister components

For map placed blueprint actors with components with property modifications, when triggering Reset Instance Changes to Blueprint Default from the actor instance's Details panel, any components with ...

Crash when Previewing specific LODs within Static Mesh Editor at certain Screen Resolutions

A crash occurs when attempting to preview specific LODs when the monitor resolution forces the menu to be expanded when selecting an LOD. This Jira was created from CrashReports submitted by the pu ...

Enum to string conversion has different results in PIE vs Cooked builds

This is because the metadata is editor only and will be stripped in a cooked build. We should make the behavior of the to string function consistent between PIE and a cooked build. ...

Runtime float curves not applied in inherited blueprints

Actor blueprint 'bOptimizeBPComponentData' breaks subobject instantiation for runtime spawned actors in cooked builds

A user has reported that when an actor blueprint enables Generate Optimized Component Blueprint Data, default instanced objects of components are not properly duplicated in cooked builds. This resul ...

Controller::OnPossessedPawnChanged broadcasts (Pawn->null) but not (null->Pawn) during AGameModeBase::RestartPlayer()

Context AController has a blueprint assignable delegate that fires when the possessed pawn changes. This should fire in both singleplayer and networked games. The bug is reproducible in single play ...

Occasional crash when attempting to in-app purchase on Android device

App is frequently terminated with a NullPointerException when attempt to request in-app purchase. It is assumed that product information cannot be retrieved if there is no Google account logged in t ...

Blueprint class's property is overridden by parent blueprint class

I did some research. The problem is caused in CoreNative.cpp. In Function GetInstancedSubobject (Line 126) We should check if instance is runtime instance first. If it is runtime instance, just us ...