Unreal Engine Issues

MapCheck warnings when opening a map using landscape override material

On NM_Client, GameplayDebugger defaults to green smiley for NPCs implying running BehaviorTree while AI info is unknown

Context GameplayDebugger (Press ` in-game) displays a green smiley (AICON-Green) for AIControlled pawns that are running a BehaviorTree and a red angry face (AICON-Red) otherwise. If the AIControll ...

InstancedStruct hard references fail to cook in World Partition map

Hard references through InstancedStruct do not cluster the actors together into the same cell. ...

When copying category properties, all the EditConst flags are not checked. This overrides variables that should not be written.

If you create two actors that have the same structure of variables in a category, and you try to copy the category variables of one actor into the other, variables that have ReadOnly/EditConst speci ...

[Stream Cache][Assert] - UnrealEditor_Engine!FCachedAudioStreamingManager::RemoveReferenceToChunk() [AudioStreamingCache.cpp:701]

Found while messing around with a revamp of some of the Audio Stream cache tests. The map in this test is a WIP as I'm still just trying stuff out, but hit this assert 5/5 times.Assertion failed: Fo ...

Jitter playing animation on actor located far from origin

A licensee has reported an issue with jitter when playing animations on an actor translated far from the origin (300000.0 units).  This repros on the First Person Template.  The issue is more obviou ...

[AI] Navmesh edge missing for polygon in tile

User is reporting a bug where there are cases that a polygon in a navmesh tile will not generate an edge. This seems to be where only part of the polygon side would be part of the edge, but the rest ...

Playing two instances of the same level sequence with an audio track will not work as expected.

Two instances of the same level sequence playing audio will cause the audio to stop playing. ...

Crash during shader compilation when r.Shaders.Optimize=0

The primary shader crashing is "FVisualizeLumenSceneCS" which I've put in the callstack section, but I think this is more likely a binding problem as I'm also see the following crash with cloud shad ...

Disabling internal audio to use external audio system shows "Audio Device Manager Initialization Failed!" warning

In addition, we can find  "Main audio device could not be initialized. Please check the value for AudioDeviceModuleName and AudioMixerModuleName in [Platform]Engine.ini." log message in the engine. ...