Unreal Engine Issues

Calling SetMassOverrideInKg in a constructor will crash the engine on launch

Calling SetMassOverrideInKg reaches back to a "check(GEngine)" call in BodyInstance.cpp (line 2998). B/c of this check, the engine will crash on load if SetMassOverrideInKg is called inside a class ...

ALight::Destroyed() doesn't call Super::Destroyed()

A licensee mentioned that If you see ALight::Destroyed() in Engine\Source\Runtime\Engine\Private\Light.cpp, you can see Super::Destroyed() is't called in the function. ...

Viewport Renders Black when adding a Third Player using Splitscreen Multiplayer

As the title suggests, whenever you attempt to add a third player using splitscreen, whenever the third player is created the viewport renders black. This only occurs when the viewport is sized to a ...

Deferred decals with negative scale are not rendered on screen

Decals that have a negative scale are invisible in the level. This occurs across all engine versions tested. 4.10 - 4.12. ...

Run construction script on Drag set to False has no effect on Vector Variable that use "Show 3D Widget"

If the user has the class defaults of their actor blueprint set for Run construction script on Drag to be false then the vector 3D widget will cause the blueprint to run the construction script anyw ...

Smart Links are Removed During Dynamic NavMesh Regeneration

Smart links disappear whenever the Nav Mesh regenerates while using Dynamic Runtime Generation. For example, if you have a dynamic object that is constantly moving and causing the Nav Mesh to rebuil ...

Put Rigid Body to Sleep does not work when used in the construction script

Put Rigid body to sleep does not appear to work within the construction script ...

TRACKS: Modifying an animated actor with no keys doesn't update the defaults.

When modifying the transform or properties of an animated object with no keys, the default values for the animation tracks should be updated. ...

Editor discarding valid navmesh with world composition

Enum Variable Cannot Accept Code-Based Enums

Trying to create a variable that accepts multiple types of enums, and code-based enums are not showing up in the list. Creating a variable that stores a UEnum class does not display enums created i ...