Unreal Engine Issues

[CrashReport] UE4Editor-MetalShaderFormat.dylib!FGenerateMetalVisitor::print_constant()

This is an early trending crash coming out of the 4.18 previews. It occurs on Mac, and all affected project names indicate it is related to AR. Users have not provided any descriptions of their ac ...

AnimSequence derived data is non-deterministic

Building derived data for AnimSequence does not create deterministic output. Data that is stored to the DDC is expected to be deterministic. If there is a need to store metadata that may vary betwee ...

Datasmith Import flipped for Autocad 2020 files

Some of the items has scaling issues and there are quite a few that have moved from their origin point as well, but the biggest problem is that the whole model is mirrored. even the text. This was ...

Crash calling user-function in non-editor

Crash occurs when attempting to call native Pre-Construct in the attached project. ...

Negative scale with non 0 rotation doesn't work.

Non-deterministic cook due to UModel::LightingGuid

The -DiffOnly cook mode shows that the LightingGuid seems to change every cook. In Lyra, there seems to be 48 such assets that change every cook due to this. ...

A non moving looping camera sequence flickers.

There is a small flicker on a looping single camera sequence where the camera doesn't move. Because the camera is static, you would not expect to see a flicker in lighting conditions. ...

Non-determinism in StaticMeshComponent::BodyInstance when cooking LevelInstances

A licensee reported that serialization of LevelSequence with StaticMeshActor with default collision for which mesh has NoCollision profile is not deterministic. The issue seems to be in the fact tha ...

Literal value (in UEdGraphPin) for Asset ID shouldn't be stored as UObject*

https://udn.unrealengine.com/questions/267251/proper-way-to-reference-level-asset.html [Link Removed] https://udn.unrealengine.com/questions/294464/set-nodes-in-bp-for-asset-class-ids-may-hard-ref ...

Blueprint macros with wildcard arrays fail to compile when nested

If a user makes a macro with a wild card array and then nests it inside of another macro. The wild card array will throw the following error. This can also happens with a StandardMacro like For Each ...