Unreal Engine Issues

Migrating a blueprint based on a custom class breaks after migration

When a blueprint that is based on a custom class is migrated from one project to another the references to the original class are held. This means that the blueprint is unusable in the new project, ...

Changing Time Dilation at runtime causes erratic physics with Vehicles

When changing Time Dilation settings at runtime, it can cause vehicles to be thrown into the air and exhibit other odd physics behavior. This issue occurs when the Time Dilation is being set from sl ...

Collision generates overlap event without a Character triggering it

When using OverlapAll as a collision preset on a Cube, the collision will trigger when placed near a wall even if the Character has not collided with the Cube. ...

Crashes when copying an array of actors that implement an interface into an array of interface references

When assigning an array of actors that implement a specific interface to an array of the specific interface the engine crashes. This doesn't happen if the actor array is put through a for each loop ...

Asynchronous Image Loading from Disk Documentation leads to memory leak

The documentation example to create your own asynchronous image load from disk results in a memory leak that is noticeable using the task manager.  ...

Duplicating a static mesh with foliage attached breaks connection

Editor Crash when trying to get Color data from Vertex buffer

When attempting to get the vertex color of an instance of of a static mesh that is painted after placing it in the World Viewport. The Editor crashes returning an "Unhandled Exception". The cause o ...

2 minute hang and high memory usage when adding assets with large textures

2 minute (or more) hang and high memory usage when adding assets with large textures. The memory increase can be up to 3 or 4 GB when none of these assets(or referenced assets) take up nearly that ...

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 ...

Scaling snap for selected object are reset to the origin of the scale pivot location

When scaling multiple selected actors in the scene with snap enabled the actors will reposition to the pivot origin of the last selected actor in the group when going down to a value of 0 or a negat ...