Unreal Engine Issues

The Difference node no longer updates after the first call

The Difference node no longer updates after the first call. It appears to save the values passed into it on it's first call Note Possible workaround: If a clear node is used on the difference node ...

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 ...

Interface as a function parameter does not get set unless class directly inherits the interface

When a function takes an interface as a parameter, calling that function from a blueprint implementing the interface does not recognize the parameter unless the blueprint's parent class directly inh ...

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 ...

WindowsNoEditor*.ini settings don't seem to override Default*.ini settings

By default in a new project, Launch On creates a WindowsNoEditor build, but the WindowsNoEditor*.ini settings don't seem to override the Default*.ini settings. ...

Major performance drop with instanced meshes since PhysX 3.4 upgrade

Major performance drop with instanced meshes since PhysX 3.4 upgrade Regression: YES Worked: 3172292 (4.13.2) Broken: 3249277 (4.14.3) For me, my results were: 4.8 through 4.13 No Collision - ...

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 ...

Hot Reload: Component bCanEverTick is not updated after compile

Setting PrimaryComponentTick.bCanEverTick in a custom actor component's constructor does not does not stop the component from ticking after compile. ...