Unreal Engine Issues

AttachChildren on the client can lose entries

If a client attaches a scene component to a server authoritative scene component and that server component later has a change in attachment made on the server, the AttachChildren array on the client ...

The Merge Actors Tool doesn't account for rotated collision shapes when doing non-uniform scaling

Collision shapes for merged actors using the Merge Actor tool do not account for the rotation of the actor when combining the data. It looks like the X and Y collision shape rotation in the world ...

Reroute nodes break Cached Poses in AnimBPs

Reroute nodes break Cached Poses in Animation Blueprints Regression: This does not occur in 4.12 ...

NetMulticast function will force non relevant Actors to be relevant for a few seconds before they become non-relevant again

If a NetMulticast function is calledl, it will force non-relevant Actors to become relevant for a few seconds before going back to non-relevant. ...

BSPs cannot be selected through other BSPs set to hidden

BSP brushes cannot be selected through other BSP brushes that are set to hidden through the world outliner. Other assets such as static meshes are unaffected by this or do not cause the same error t ...

PHAT body collision is shown as smaller when looking at it in the main editor viewport.

When a physics asset is set up for a Skeletal Mesh, the physics bodies are still visible in the main editor when using Show Collision (alt+C) but are extremely small. They are still oriented along t ...

Passing array from blueprint to C++ causes performance drop

Passing a blueprint array as an argument to a C++ function causes a spike in Frame rate, game and GPU. This spike is noticeable when using UnitGraph. Attached screenshots show difference in UnitGr ...

Variables named PlayerCamera are replaced with PlayerCameraManager in PlayerController BPs

Variables named PlayerCamera are being automatically replaced with references to PlayerCameraManager in Player Controller Blueprints. Occurs when you copy+paste a reference (both get and set) to Pl ...

Groups Selected in Viewport Are Not Selected in World Outliner Causing Unexpected Results

Selecting objects that are grouped together in the viewport will not highlight the group actor in the World Outliner. One known result of this is, after selecting the group in the viewport, right-cl ...

Pose flickering when changing lods and using Layered Blend per Bone