Unreal Engine Issues

If enable Preview Slot of non-default slot in AnimMontage, AnimNotify of AnimationSequence does not run.

The AnimSingleNodeInstance used in the AnimMontage preview does not consider multiple Slots. The following is a correction code. void UAnimSingleNodeInstance::SetAnimationAsset(class UAnimationAsse ...

Oculus Quest Link with OpenXR fires action events multiple times when multiple action events are bound to the same key

From a developer: If the same key is mapped to N action events all the mapped events fire N times. This issue only exists with the OpenXR plugin enabled and does not occur for any keyboard/mouse i ...

Motion Blur Bug on 1st frame of camera change with sequence

Renderdoc capture of the blurry frame is here - [Link Removed] It should have symbols attached to it but let me know if not and I can reupload (Jon Cain) It's coming from the motion blur pass but ...

Python Type Hinting

Goals / Why Type hints allow developers to create self-describing code by statically indicating the type of a value within your Python code.OutcomesBetter documented code for easier reading and debu ...

unreal.py stub can overload IDE parsing limits

We should consider splitting this into separate per-module files that are merged together via imports. Any strong dependencies (eg, inheritance) need to import the type being inherited. ...

GAME option of GenerateProjectFiles.bat does NOT work properly

if using -GAME option of GenerateProjectFiles.bat, it does not work correctly by the following codes.protected void AddProjectsForAllModules( List<FileReference> AllGames, Dictionary<FileReference, ...

OpenXR Remoting fails to attach actions to remoting session in 4.27

Regression from 4.26 where actions fail to bind when remoting in 4.27 Repro: using the Microsoft OpenXR Extensions plugin here:https://github.com/microsoft/Microsoft-OpenXR-Unreal/tree/main/MsftOpe ...

Once an actor channel is closed by NetCullDistance, root motion movement synchronization stops working

Properties that uses DOREPLIFETIME_ACTIVE_OVERRIDE (ex. RepRootMotion ) will also skip replication when an actor channel is newly opened. This means that if the variables on the server side do not c ...

HLOD not working in sublevels in cooked build when Save LODActors to HLODPackages is set to true

SingleLayerWater is rendering brighter shallow water with fog

Shallow water areas in scenes with exponential height fog will be brighter than they should be. Possibly due to the fog being applied twice in the SingleLayerWater shading model. ...