Unreal Engine Issues

VFInitRotation(Cascade) always provides the same rotation

This problem caused by incorrect initialization of RandomStream in the GPU particle. //PaticleGpuSimulation.cpp virtual void Init() override { ... check(AllocatedTiles.Num() == TileTimeOfDe ...

Error: FAsyncPackage::LoadImports for <some asset>: Skipping import PaperTileMap /Script/Paper2D.Default__PaperTileMapActor:RenderComponent.PaperTileMap_0, depends on missing native class

User reporting seeing this error start appearing in 4.25.1 (possibly 4.25.x, unsure if they were previously testing on 4.25.0 or not). It appears 'benign' as the expected data still gets loaded, bu ...

Renamed material parameters in layer functions don't propagate to MIs

Long Movie Pipeline Renders cause Audio Crashes

This issue can temporarily be worked around by launching the editor with the "-nosound" argument which will disable audio recording. ...

FUniqueNetIdRepl::NetSerialize() crashes when embedded in a TArray() of structs.

Calling the NetSerialize() function of FUniqueNetIdRepl from a custom NetSerialize() causes a crash. This only seems to occur when the struct is part of an array RPC parameter. ...

Second controller input doesn't work in fullscreen mode on PIE.

When two controllers connected, player2 input is disabled in full screen mode in PIE. This doesn't appear to be in focus. If seeing the any focusing widget, player1 focused on SViewport, but player ...

Crash compiling a blueprint after changing a TMap value from Vector to Vector4

REGRESSION: Issue does not occur in 4.24 Crash occurs when the user changes a blueprint TMap value from Vector to Vector4 and then compiles the blueprint. This seems to only occur with TMaps, as ...

Asset Registry GetDerivedClassNames does not work properly during editor startup

This bug comes from https://udn.unrealengine.com/questions/585499/view.html which describes a problem where a licensee is trying to use the AssetManager to scan a primary asset type that is generate ...

Native Component bound events do not throw an error when they are removed from a component

This is related to the previous issue where if you deleted a component than there would be no errors ([Link Removed]), but instead of the component itself being deleted, the delegate has.  The er ...

Animation Curve name changes when retargeting Skeleton

The name of Animation Curve may change when retargeting an asset that depends on AnimSequence asset to Skeleton with different order of Animation Curve. ...