Collision Profile Name variable gets reset on multiple select

Physics - Jun 20, 2017

When adding a variable of collision profile name type to an actor(as editable), its value gets reset when the instance becomes a part of multiple selection. ...

Motion blur on single frames when character and camera are moving together

Rendering - Jul 5, 2017

Motion blur on single frames when character and camera are moving together. Cannot tell what is causing this. There is no pop in the character animation and the only thing I can imagine is that th ...

[CrashReport] UE4Editor_UnrealEd!SCurveEditor::OnObjectPropertyChanged

Tools - Aug 1, 2017

This is a common crash that has affected more than 170 users since at least 4.15 and occurring into 4.17. Based on one user description and frequent project names, this appears to commonly correla ...

Preview of Material doesn't Work Well When Using Particle SubUV and World Position Offset

Rendering - Niagara - Aug 8, 2017

Preview of material doesn't work well when using Particle SubUV and World Position Offset. The issue occurs in only preview of material. It doesn't occur in Cascade. ...

[CrashReport] Assertion failed: SizeX <= GetMax2DTextureDimension() in d3d11texture.cpp

Rendering - Aug 22, 2017

This is a common and longstanding assertion that has occurred since at least the 4.13 release. User DescriptionsI was messing with a sequencer's camera settings (not playing back, but active) and c ...

UStaticMeshComponent.PreviousLODLevel always returns 0

Rendering - Aug 30, 2017

The UStaticMeshComponent.PreviousLODLevel variable always returns 0 no matter what the last LOD actually was. Regression?: No This also occurred in 4.16 ...

Naming a Blueprint function/graph with non-ASCII characters can cause a build failure for certain cooked targets when Blueprint nativization is turned on.

Gameplay - Blueprint - Nov 2, 2017

This is due to the UCS-2 encoded UFunction object name passing through UHT into the boilerplate code (*.gen.cpp) that gets generated from the nativized Blueprint's C++ header file. The issue also o ...

DOF effect set with negative near transition region causes Massive FPS loss moving into Focal Region

Rendering - Feb 11, 2016

With a Bokeh DOF setup that essentially places the Near Transition Region into a Negative Space (or non-existence) the FPS drops dramatically from out of focus region to in focus region. In Focal R ...

Implementing an interface in a blueprint does not show interface functions until interface is opened and compiled

Gameplay - Blueprint - Aug 3, 2015

If an interface is implemented within a blueprint, the initial function in the blueprint interface cannot be called in the actor. The function will be populated after compiling the blueprint interfa ...

Mouse dragging cursor accelerates significantly on Mac

Tools - Jan 18, 2017

This also occurs in 4.14.3 This does not occur on Windows. Could not get this issue to reproduce while recording the screen with quicktime player, but if you experience it in person it really feel ...