Unreal Engine Issues

Linker Object (Unresolved Export) Crash on Standalone Exit

Crash when exiting standalone. "we have an export that is never getting resolved, this is the export that is causing the mislink error when shutting down the game" Please see UDN post for more info ...

Build Android x86 get error "undefined reference to '__atomic_load_8'"

Corruption in rotating decal in TM-ShaderModels on iPhone 8 and X's

This particular decal is animated and has a Translucent decal blend mode This occurs on both iPhone 8 and 8 Plus (11.0.2) It does not occur on: iPhone SE, iOS 11 beta1 iPhone 7 Plus, iOS 10.3.2 ...

Niagara systems always compile on load.

GetCookedEnvelopeData Blueprint node does not work

The GetCookedEnvelopeData Blueprint node does not output cooked audio envelope data when a Soundwave with enabled Amplitude Envelope Analysis is being played. Tested in 4.21 (CL - 4753647), 4.22.3 ...

Crashes when changing parameters by changing the collection of the NiagaraParameterCollectionInstance

Particle editor realtime mode disabled when play in editor

Particle editor realtime mode disabled when play in editor, while it's normal in UE4.24 ...

Spawning a Spawnables to a sub-level on the sequencer will spawn to Persistent Level in the case of Editor

This feature works fine on Runtime and is spawned to Sublevel. And, once we save the Level, it will be spawned actor to a sublevel even on the Editor. ...

Renaming a SkinnedMeshComponent onto a different owning actor will cause issues with FAnimUpdateRateManager

As mentioned in the UDN - the user tried to rename an SMC to a different actor, which leaves the URO manager left with an incorrect data as it is not aware of the move. User proposed overriding Post ...

There's no motion blur on streaming GeometryCache

UDN customer mentioned: "there looks to be support for motion vectors as exported from DCC apps (for rare cases like fluid sim), but regular in-engine motion vector calculation for regular motion bl ...