Hot reload breaks blueprints of class type when a struct containing a member of that class is defined in that class' header file.

UE - Gameplay - Blueprint - Sep 16, 2015

When a struct is created in the header file for a class, and the struct contains a member that is of that class' type, performing a hot reload after changing the class will result in a Blueprint der ...

collision components added to vehicles do not properly register overlap events

UE - Gameplay - Sep 16, 2015

overlap events do not fire when collision components such as sphere or capsule collision components are added to a vehicle blueprint. Overlap events seem to register if the component overlaps with o ...

Altering an array value in a structure causes the menu to collapse

UE - Gameplay - Blueprint - Sep 16, 2015

When making any alteration to an array within a UDS the drop-down menu for the array collapses. Regression: Yes Works: 2689999 Broken: 2693272 ...

Transparency applied through widget animations do not work on 3D Widgets

UE - Editor - UI Systems - Sep 16, 2015

If the user creates a widget with an animation that fades the widget out. This effect will not carry over into a 3D widget. The 3D widget goes directly from 1 to 0 or visa versa. ...

New Relevant Anim Time Transitions not working initially

OLD - Anim - Sep 16, 2015

Using the new "Get Relevant Anim Time Remaining" Node, transitions don't read the relevant anim until the second time passing through the state. *See attached image. In contrast, using the old "Tim ...

Misspelling in Editor Preferences: Experimental

Tools - Sep 16, 2015

UE4.9.1 under Editor Preference3s ->Experimental -> Cooking it says "Iterative cooking for builds launched [form] the editor." Correction: [from] ...

Level Blueprint's Parent Class can be set to another Level Blueprint's generated class

UE - Gameplay - Blueprint - Sep 16, 2015

You can assign the Parent Class of Level Blueprint to be the generated class of another Level Blueprint, which gives you the following "Graph is linked to object(s) in external map" error if you try ...

Teleport only affects static mesh of destructible meshes, collision remains at original location

UE - Simulation - Physics - Destruction - Sep 15, 2015

Teleporting a destructible mesh only transports the mesh of the object, the collision remains where it was originally located. Further, if the player runs into the collision, the static mesh will re ...

Renaming components in blueprints resets default values for all instances

UE - Gameplay - Blueprint - Sep 15, 2015

Renaming a blueprint component and presing ocmpile will reset any altered instances of the blueprint to default values. ...

Reset Instance Changes to Blueprint Default does not revert changes made to instances

UE - Gameplay - Blueprint - Sep 15, 2015

creating an instance of a blueprint and making changes to the instance will not respect "Reset Instance Changes to Blueprint Default" when pressed from Details Pane. ...