Unreal Engine Issues

Lighting Build fails with World Settings Error

Lighting Builds seemingly successfully but produces a Map Check Error for World Settings. There are several things that can be done to "eliminate the issue" and I have separated them into different ...

Inherited UserWidgets can't create animations that bind to widgets on their parent's WidgetTree

Animating an inherited widget from a child UserWidget class appears to work, but the bindings don't resolve properly and the animation is null at runtime. This workflow should either be supported, o ...

Dynamic material is not discarded when other sub-sequences are played while the master sequence is playing

Landscape flatten target value and terrace interval's sliders don't take the landscape scale into account

This problem was originally reported in this UDN : https://udn.unrealengine.com/s/question/0D5QP000007yVue0AE/flatten-brush-limit-with-landscape-scale-z?fromCase=1 ...

Creating a new Physics Asset will override the behavior of the previous Physics Asset inside the Phat Editor

Creating a new Physics Asset will override the behavior of the previous Physics Asset inside the Phat Editor. This seems to be linked to which physics asset is currently assigned to the skeletal me ...

Crash in FObjectReplicator::StartReplicating when removing replicated uproperty and hot reloading with two players

The editor crashes when the user removes the replicated uproperty from a variable and tries to hot reload while a PIE session with two players is still active. This issue was found while trying to ...

ReplicatedUsing stops getting called after setting a value to nullptr.

Eventually, the ReplicateUsing function called out for a UPROPERTY is no longer being called. After investigation, it appears that the data is making it from the Server to the Client, but that the d ...

Inclusive Nativized Blueprints slower than Non Nativized Blueprints in packaged project

When nativizing blueprints the packaged build of the project runs slower than a non-nativized version of the packaged project. Found in 4.22 CL#7053642 Reproduced in 4.21 CL#4753647, 4.24Main CL#7 ...

When copying category properties, all the EditConst flags are not checked. This overrides variables that should not be written.

If you create two actors that have the same structure of variables in a category, and you try to copy the category variables of one actor into the other, variables that have ReadOnly/EditConst speci ...

The Open Level command is causing Android devices to freeze up

If you use the Open level node in the newest promoted build, once the project is deployed to an Android device, when triggered with a UMG, the project will freeze and be unplayable. Issue does not ...