Unreal Engine Issues

[CrashReport] UE4Editor_CoreUObject!TFastReferenceCollector<1,FGCReferenceProcessor<1>,FGCCollector<1>,FGCArrayPool,0>::ProcessObjectArray()

This is a common crash affecting users in 4.16. Over 100 users have been affected, although they have not provided additional information. Source Context 469 TokenStreamIndex++; 47 ...

[Crashreport] UnrealEditor-Niagara!FNiagaraSubmixListener::UnregisterFromSubmix() [NiagaraDataInterfaceAudio.cpp:85]

Generated from CrashReporter Crash only occurs when packaged. ...

Nanite Dynamic Tessellation issue with Material Layers

Local binary build of 4.22.1 fails when only Visual Studio 2019 is installed

Attempting to create a local binary build of 4.22 using Visual Studio 2019 (with no other versions of Visual Studio installed) currently fails with several warnings and errors, including the followi ...

OnKeyDown does not function in packaged game

Pressing down a key for a widget blueprint works in PIE however, it's not functioning once the project is packaged. Project Rar File: [Link Removed] ...

[AI] Editor crashes when editing values of an FInstancedStruct's TArray inside of a BP

While using a custom struct that contains a TArray member variable with FInstancedStruct, you cannot edit it in the editor without a crash. Other structs and types work as expected even if they deri ...

Build fails due to potential divide by 0 error

Shipping builds of the Engine fail when using the Visual Studio 2017 compiler due to a potential divide by 0 error. This is because the TotalColumnSize property of SMemoryStats is set to 0 by defaul ...

BuildId in the UE4Editor.version file for a local binary build will sometimes be updated when a hot reload is performed

Performing a hot reload on a project that is using a local binary build of the Engine will sometimes result in the Engine's UE4Editor.version file being updated with a new BuildId value. That result ...

NPC - Texture Sample DI does not work on Niagara Parameter Collections

Texture sample DIs no longer work when used with Niagara Parameter Collections. This seems to affect Volume Texture DIs based on customer reports, but I have not confirmed this.  ...

LevelStreamingPersistence: BP added components don't persist properties in PIE until map actor resave

Context The LevelStreamingPersistence plugin can be used to remember and restore properties on actors, components and other objects that are part of a streamed level. Persisted properties are resto ...