Unreal Engine Issues

Toggling ULevelStreaming::bShouldBeVisible causes replication errors

Looks like the replication system doesn't properly account for bShouldBeVisible. Once a level has be marked bShouldBeVisible=false on the server, the level is completely cleaned up and all actor cha ...

Crash occurs when right-clicking in graph of a blueprint with a null parent class

REGRESSION No Crash occurs when the user right-clicks in the graph in a blueprint that has a Null parent class. ...

Ensures when packaging a project for Windows

Packaging a blueprint project fails due to multiple ensures. This does not occur in UE4/Main. ...

DoNotCreateDefaultSubobject is not recognized when an actor is duplicated

Adding DoNotCreateDefaultSubobject to a class after placing an instance of that class in the viewport will fail to be recognized when duplicating the placed instance. This is not a hot reload issue ...

In "Blueprint could not be loaded..." mesage, No and Cancel do the same thing

In the warning message the user receives when opening a blueprint with an invalid/disabled class (such as opening a Wheeled Vehicle Pawn with PhysX Vehicles plugin disabled), the user is given Yes/N ...

Evaluate ClampedPow material function

ClampedPow seems to have been added as a way to tackle common compile warnings and edge cases (particularly NaNs), but the code shouldn't be calling both an abs() then a max(). This causes negative ...

Packaging Fails in a C++ Project with a Project Name Containing an Apostrophe

Packaging fails in a C++ project when the Project Name field (Project Settings->Description->Project Name) contains an apostrophe. I've attached the logs from the 4.15 version of the project. Thi ...

Disabling LQ lightmaps causes crash on mobile preview

"Save Current As" is not fully loading the newly-saved level

Workaround: Navigate to and open the newly-created level in the Content Browser prior to LaunchOn. After using the Save Current As tool, Game runs into error when trying to LaunchOn. Editor display ...

Painted Foliage Instances Randomly Culling in Splitscreen Multiplayer

Foliage instances are behaving strangely when playing splitscreen multiplayer in a single instance window. The instances will cull in and out of visibility depending on the size of the current playa ...