Unreal Engine Issues
Unreal Engine Issues
OSS Null won't find multiple LAN sessions hosted by a single instance
UE - Online - Feb 22, 2023This happens because of how FLANSession::Tick will handle receiving multiple response packets from a single host. FLANSession will cache the ResponseGuids of any incoming host response packets, so i ...
Overriding Component class does not work properly in grandchild class BP
UE - Framework - Blueprint - Feb 22, 2023If you set ComponentClass override in child class BP and grandchild class BP respectively, it is ignored in grandchild class. This issue is probably related to [Link Removed]. The fix for [Link Rem ...
Create a Material Editor node that exposes the VertexID
UE - Rendering Architecture - Materials - Feb 20, 2023A UDN user has requested that we expose the VertexID as a Material Editor graph node. According to a brief thread with [Link Removed] , this is a useful feature to add. https://udn.unrealengine.com ...
OnComponentHit Event is not triggered when hit by a spawned actor with simulate physics enabled for WheeledVehiclePawn with BoxCollison
UE - Simulation - Physics - Feb 20, 2023BoxCollison's OnComponentHit event is not triggered when BoxCollison hits a spawned actor with simulate physics enabled. The event is triggered if the same actor has been placed in the level beforeh ...
AnimDrawDebug does not work if using RootMotion from Everything
UE - Anim - Gameplay - Feb 14, 2023Debug drawing with AnimDarwDebug~ does not work when RootMotionMode is set to "RootMotion from Everything". In addition, the same issue occurs when MultiThread of Animation is turned off. Licensee ...
BlackboardComponent observer can be called for the wrong key
UE - AI - BehaviorTree - Feb 7, 2023We need to, at least, prevent this by clearing observers when running a new BT using a different blackboard. Must also think that this might affect licensees relying on the current behavior (might h ...
TSR ghosting when see through translucent wall
UE - Graphics Features - Feb 7, 2023see through a translucent material will cause ghosting This issue did not occur in 5.0, it occurs when using TSR on UE 5.1 or later. ...
Syncing issue when stopping and blending out a non-looping montage to an anim graph
UE - Anim - Gameplay - Feb 7, 2023When syncing from a non-repeating montage that is blending out to an anim graph, the anim montage is marked as a follower due to having its PrevMaker as an AnimBoundary(-1), furthermore in this case ...
FBasePassMeshProcessor crashes in ODSC code because the WorldGridMaterial doesn't support translucency
UE - Rendering Architecture - Jan 30, 2023UDN: [Link Removed] Slack: [Link Removed] Then, the return value of TryAddMeshBatch is determined by FBasePassMeshProcessor::Process. When the crash occurs, GetBasePassShaders fails to get the shad ...
Make literal container nodes (e.g. MakeArray) do not cast object ref output terms linked to interface-typed input pins.
UE - Framework - Blueprint - Jan 28, 2023As with most nodes, object reference outputs can be directly connected to interface-typed inputs on "make container" nodes (e.g. "MakeArray") if the object's class type implements the interface clas ...