Unreal Engine Issues

Crash when calling an event with an enum reference parameter with literal

The issue appears to be the type of the input pin on the custom event(or function - both behave the same), under normal circumstances it should allow you to pick the enum from a list on the calling ...

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

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 ...

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.  ...