Unreal Engine Issues

Reimporting a static mesh with modified material LODs does not update the materials correctly

In Main the cube Section0 LOD material is replaced with the DefaultGrid material which is also not expected. This appears to be a regression from 4.15 based on the test execution history. ...

Packaging fails if a nativized Blueprint inherits a TArray from a parent code class that is of type TSubclassOf< SomeClass >

Packaging will fail if a Blueprint is set to be nativized, and it includes a TArray inherited from a parent code class that is of type TSubclassOf< SomeClass >. REGRESSION: Unknown. Blueprint nativ ...

Compile error with Local Variable of a Struct that contains a Set or Map type

Compile error with Local Variable of a Struct that contains a Set or Map type. Standard and array variables work without issue. Non-local variables also work without issue. ...

Crash when launching Animation level of ContentExamples onto Mac

The standalone game window will crash when attempting to launch the Animation level of ContentExamples onto a Mac. I was unable to reproduce this issue in //UE4/Main at CL 3334033. ...

Odd decimals showing in FPS timeline of Sequencer

There are odd decimals when FPS time snapping is set. This seems like a similar issue from UE-41311 This is a regression from This does not occur in //UE4/Main at CL 3334092 ...

Crash accessing a non-empty TSet or TMap local variable in a blueprint function

Getting a crash when trying to access a non-empty TSet or TMap local variable in a blueprint function. This is only occurring with local variables. The issue also does not occur if the TSet or TMap ...

Collision Responses will reset to previous setting after changing the Preset Collision Profile

Collision Responses will reset to previous setting after changing the Preset Collision Profile. After the change is made and "Accept" is pressed, the Collision Responses will still have the old ch ...

Painting on animation sequence paints on invisible T-pose skeleton

Blueprint compile error can occur when trying to override a BlueprintImplementableEvent that takes a custom enum as a parameter

When a BlueprintImplementableEvent that takes a custom enum as a parameter is overridden in a Blueprint, it will throw a compile error. The compile error states that the event cannot be overridden b ...

Pass check wrong in FRenderTargetPool::FindFreeElement

Looks like the pass count check for assigning the fast vram flag is wrong when looking for a pooled render target and always discards the first found RT when making multiple passes. Code should like ...