Unreal Engine Issues
Unreal Engine Issues
Hot Reload cannot be performed when using the DebugGame Editor configuration
UE - Foundation - Cpp Tools - Hot Reload - Dec 31, 2018In 4.21.1 it is no longer possible to perform a Hot Reload when the game is open in the Editor and using the DebugGame Editor configuration. REGRESSION: Yes. A Hot Reload was possible in 4.20.3 whe ...
Calling GEngine->Browse from an RPC implementation causes a crash
UE - Networking - Nov 5, 2019The engine is not resilient to calling Browse from within an RPC implementation, and likely not resilient to other ways of destroying the net driver within RPCs/OnReps. It's not something we need to ...
Tessellation Materials are not working on Landscapes
UE - LD & Modeling - Terrain - Landscape - Dec 17, 2019Tessellation is not working on landscapes, but it does works fine on static meshes. This is a regression from 4.23.1 (CL-9631420) where the tessellation was visible with this setup. This was tested ...
Reading curves from an FBX incorrect with FFbxCurvesAPI
UE - Anim - Sequencer - Dec 20, 2019A licensee has brought up some inaccuracies in the reading of curve data from FBX files: #1, Remove calls to SetKeyInterpMode, SetKeyTangentMode, SetKeyTangentWeightMode, and change them to NewKey. ...
FSoftObjectPath does not allow for referencing multiple types of actors using AllowedClasses
Tools - Jul 9, 2019FSoftObjectPathCustomization and SPropertyEditorAsset do not support multiple actor classes in the AllowedClasses list. The ObjectClass is only set in FSoftObjectPathCustomization if there is only ...
Crash occur when switching the Ray Tracing shadow function when only shadow is enabled in the Ray Tracing
UE - Graphics Features - Lumen - Sep 16, 2020According to the licensee, this problem is caused by a variable inconsistency in Cvar. The cause seems to be the difference between the CVar reference when generating RayTracingSceneRHI and the CVa ...
MediaFramework - Webcam Video input shows as black in Media Player
UE - Media Framework - Aug 17, 2021Alejandro Arango 3 days ago In fact, it seems the 4.27 changes are conditioned by WMFMEDIA_PLAYER_VERSION . So the only change needed is in WmfMedia.Build.cs . They only need to change it to say: P ...
Python function unreal.AssetRegistry.get_assets_by_class is broken
UE - CoreTech - Nov 21, 2022Repro Rate: 3/3 This issue was reproduced in //UE5/Release-5.1 at CL 23058290. This is confirmed to be a regression since the errors do not occur on the previous version and is regression tested o ...
Cable Actor resets to initial end point position when moving the actor while Attach End is disabled
UE - Simulation - Physics - Apr 4, 2023This is a regression. Tested in //UE5/Release-5.1 CL23901901 Additionally, I placed the cable actor in a sequencer then keyed several changes in position. The Cable actor had the same behavior of r ...
Performance concerns with control rig component initialization
UE - Anim - Rigging - Control Rig - May 18, 2023Report from a licensee that InitializeControlRigComponent using CR_Frame_Destructible in city sample is taking a lot of frame time. It seems that a lot of time is being spent hashing and also URigV ...