Unreal Engine Issues

FMediaFoundationMovieStreamer::Init() returns true even if the movie could not open.

Regression: "Play particle effect" anim notifies are not seen in the editor playing level sequence/matinee when Attached is set to false

Not Attached particle system is not seen in the viewport of the editor. This particle will be seen normally when PIE.  Regression? Yes. This issue is not reproduced in 4.17 version. You can simply ...

Compiler error after changing the class in a Spawn Actor from Class node, undoing with Ctrl + Z, refreshing the node, and reconnecting exposed variables

Compiler error after changing the class in a Spawn Actor from Class node, undoing with Ctrl + Z, refreshing the node, and reconnecting exposed variables. "Error Internal compiler error inside Creat ...

UWorld::GetNetMode returns incorrect value during UGameInstance::StartPlayInEditorGameInstance

During PIE instance initialization, there seems to be a window during which UWorld::GetNetMode will not return the expected value: before the instance's NetDriver has been created but after UGameIns ...

An Actor BP with an editable variable that references another Actor in the level will reference multiple examples of that Actor if it is duplicated

An Actor BP with an editable variable that references another Actor in the level will reference multiple examples of that Actor if it is duplicated. Reproduced in 4.7.2 binary and Main (//depot/UE4 ...

Projects are failing when Content/Pak folders are added outside of the saved folder

When the Content/Pak file is outside of the Saved Folder, it'll crash with an internationalization error. But when the Content/Pak file is inside of the Saved folder, there is not a crash. ...

GPU Particle Collision causes shaking when set to bounce with low resilience.

A particle emitter with GPU sprites on certain settings will shake violently as they collide with the ground. This requires there to be a strong Const Acceleration module and Collision with low resi ...

AI Pawn Sensing component cannot see and hear at the same time

Hear events are never fired while See events are fired. They are mutually exclusive, with See events taking priority if both happen. ...

Deleting an asset is unsuccessful if the asset is marked for add when using Git source control

Deleting an asset that is marked for add when using the Git source control plugin no longer actually deletes the asset. Instead the file will be removed from the Content Browser (it actually stays i ...

Toggling a Spline component from an open/closed loop through bp's isn't reflected

Toggling a Spline component from an open/closed loop through bp's isn't reflected ...