Editor crash on level load with multiple actors with the name "(none)"

Tools - Jun 14, 2017

If three or more actors are saved to a level with the same name in the Content Browser of "none", attempting to load the level (open or right click on umap asset in content browser) causes the edito ...

Undoing pasting a component will crash ([CrashReport] UE4Editor_CoreUObject!FWeakObjectPtr::IsValid() [weakobjectptr.cpp:48])

UE - Gameplay - Components - Jul 20, 2017

This is a common crash affecting users in 4.16. The callstack is similar to [Link Removed], which was fixed in 4.13. User DescriptionsAccidentally duplicated a blueprint with multiple static mesh ...

Moving a Copy of an Actor from Persistent to Sublevel Dirties Persistent Level

Tools - Aug 18, 2017

Using Alt-Drag to move a copy of an actor from the persistent level to a sublevel (when the sublevel is selected as the current level in the Levels window), the persistent level is getting marked as ...

PostProcessSettings no longer has the Post Process Materials option

UE - Gameplay - Blueprint - Aug 29, 2017

In engine version 4.17 and later the Post Process Materials node is not present. This option allowed for custom Post Process Settings. Other nodes are still present and working as intended. This iss ...

SceneColor in surface material ignores translucent objects

UE - Graphics Features - Sep 22, 2017

Translucent meshes and particles behind an actor who's surface material uses SceneColor node are not rendered properly. Changing the view angle of the camera causes the translucent meshes to "pop" ...

Building lighting after map data is built dirties level

UE - Graphics Features - Oct 5, 2017

There is an issue occurring where after the map built data is made building lighting on a level causes the level to become dirty. this occurs even if anything in the level has not been changed excep ...

TransformVector node break compilation material instance but primary material is successfully compiled

UE - Graphics Features - Jan 31, 2018

There is an issue occuring where TransformVector node break compilation material instance but primary material is successfully compiled. When using a custom node to set the value this node intends t ...

[CrashReport] UE4Editor_Kismet!FQuatRotationMatrix::FQuatRotationMatrix() [quatrotationtranslationmatrix.h:43]

UE - Gameplay - Aug 31, 2018

User comment in crash group:Please Contact me to help fix this. I don't know what else to do. 41 FQuatRotationMatrix(const FQuat& Q) 42 ***** : FQuatRotationTranslationMatrix(Q, FVect ...

Vehicles with at least one kinematic collision do not function anymore

UE - Simulation - Physics - Oct 30, 2019

Using at least one source of kinematic collision on a vehicle causes animations or movement to not function any longer. This issue persists on child bones and collisions as well. Users are unable to ...

Crash on opening Sequence Director for Level Sequence

UE - Gameplay - Blueprint - Oct 15, 2020

Within the project attached, the Sequence Director can not be opened for the Level Sequence "SkateReel Sequencer Crash." The user reports being able to open the Sequence Director prior to copying an ...