Unreal Engine Issues

Cannot find source code error when doubleclicking blueprint nodes to see it in the code.

The launcher version engine cannot find *.inl file from installed location (i.e. in my case it is located at D:\Launcher\UE_4.19\Engine\Source\Runtime\Engine\Classes\Kismet\KismetMathLibrary.inl) an ...

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. ...

Selecting with eyedropper tool will select ChildActor

It can select ChildActor with the Eyedropper tool. Since ChildActor is an actor created temporarily, when you restart the Editor it becomes empty because there is no reference. When selecting AActor ...

Static Mesh 's Light Map Coordinate Index set to 4 and execute a light build, the result will be incorrect.

Light Map Resolution is set to a small value (4 or 8), it will build normally. ...

Memory Leak during video playback when main thread blocks

Video frames are stored in a queue that keeps growing until the main thread ticks again. Can also be reproduced by playing video then clicking the import file button and leaving the file import dial ...

Grass on landscape Component was messed up when painting blend mask if this component has LODBias>0

Image sequence resolution does not match render settings when set to Custom Render Passes output format

Image sequences do not match render settings when set to Custom Render Passes output format. This issue is directly related to the Custom Render Passes Image Output Format. This does not reproduce w ...

Changing setting in RecastNavMesh breaks "reference" to NavMeshBoundsVolume

When you create a NavMeshBoundsVolume, it automatically creates a RecastNavMesh-Default. You can change the settings of the nav mesh there. However when you change settings of this RecastNavMesh it ...

Load times for the editor appear to have increased

The editor appears to have longer load time as compared to an older engine version (4.20.3 loaded in seconds while newer version appear to load the same project in over a minute) ...

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 ...