FComponentReference::GetComponent() will cast to UPrimitiveComponent when it should be able to work with any scene component

UE - Gameplay - Mar 20, 2015

The FComponentReference::GetComponent() method can attempt to cast to UPrimitiveComponent when FComponentReference appears to be able to work with any scene component. ...

Deleting the code files for a custom component from a project will result in an Engine crash when trying to open any Blueprint using that component.

UE - Gameplay - Blueprint - Feb 20, 2015

Adding a custom component to a Blueprint and then deleting the code class defining that custom component from the project will crash the Editor any time you try to open a Blueprint containing that c ...

Duplicated blueprints cannot access casted class nodes

UE - Gameplay - Blueprint - Jun 15, 2015

Duplicating blueprints that have 'cast to' nodes included in them display errors such as: "Could not find a function named 'AdjustShield' in 'worker_c'. Make sure 'worker_c' has been compiled for." ...

LineTraceSingleByChannel returns a hit for any object it hits, regardless of whether or not that object has the specified collision channel set.

UE - Simulation - Physics - May 5, 2015

The collision channel specified in LineTraceSingleByChannel does not appear to be taken into account when the trace is performed. Instead of ignoring any objects that are not set to that channel, an ...

Map disappearing from project

Tools - May 21, 2015

It's been reported that maps are going missing from projects and while they're showing up within the Windows Explorer folders, they're not showing up within UE4. You cannot migrate them in, import t ...

Particle Ribbons not firing off consistently

UE - Graphics Features - Apr 8, 2016

Ribbon trails do not immediately follow the lead particle when fired. There is an inconsistent delay in some that cause them to either not fire or fire mid stream. This did not occur in 4.10.4, bu ...

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

Tools - Apr 27, 2016

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 ...

UMG Tooltips are tiny and unreadable

UE - Editor - UI Systems - Jul 1, 2015

When hovering over tooltips, the windows pop up at a very small, unreadable size. ...

Exponential Height Fog is not working

UE - Graphics Features - Dec 28, 2015

Exponential Height Fog has no effect on the level. Adjusting the fog density has no effect either. Tested in 4.11 stream CL-2811790 ...

FBX imports incorrect vertex normals in 4.7

UE - Graphics Features - Mar 2, 2015

Box reflection captures with some assets are not working correctly. The reflection capture is being tiled with version after 4.7 that were not in 4.6. Images are attached to demonstrate along with ...