Unreal Engine Issues

Detaching part of the Visual Logger window and then closing the Visual Logger tab causes a crash

It seems that when a section of the Visual Logger is detached from the window as a whole and then that window is closed when docked next to the Content Browser, then the engine crashes. However, whe ...

FBX imports non-sequentially named Skinxx id's will not import all material elements

When importing an asset that is using the naming convention for SkinXX to order material elements does not work properly when the elements are not sequential. Any material that is not in sequential ...

Broken assignation of materials when merging meshes

See the following UDN for a good visual explanation of the bug: https://udn.unrealengine.com/questions/512811/view.html Seems like this was introduced around CL 5639656. ...

Level instance in unloaded data layer stays loaded.

EnhancedInput Triggers can become stuck in an triggered state after pause when using Set Mode UI Only and CommonUI

Error for having an extra semicolon before a UPROPERTY declaration is not thrown inside of a USTRUCT

Having an extra semicolon on the line before declaring a UPROPERTY will cause UHT to miss parsing the following UPROPERTY. This is expected, but an error is usually given when this is the case. This ...

Major performance drop with instanced meshes since PhysX 3.4 upgrade

Major performance drop with instanced meshes since PhysX 3.4 upgrade Regression: YES Worked: 3172292 (4.13.2) Broken: 3249277 (4.14.3) For me, my results were: 4.8 through 4.13 No Collision - ...

Game thread anim task evaluation can happen on first frame update even when bTickAnimationOnSkeletalMeshInit is unset

The bTickAnimationOnSkeletalMeshInit should prevent a game thread update of the anim instance on the frame that a mesh is spawned.  However, a bug in RefreshBoneTransforms is resulting in a game thr ...

Dragging to the content browser from an open import selection window will cause an assertion crash

Using a very specific way of importing an FBX will cause a crash assertion that closes the editor without opening crash reporter. Essentially when using the import button in the content browser and ...

PIE window does not match what was set in the New Viewport Resolution setting

Setting the resolution of PIE to 4K Ultra HD results in the new PIE window going very far out of the bounds of 4K. If you are using two monitors the PIE window will bleed over a good bit into the ot ...