Unreal Engine Issues

[CrashReport] Assertion failed: !bIsReentrant - UE4Editor-UnrealEd.dylib!SaveWorld()

This is a common crash on Mac in 4.16 and has occurred since at least 4.14. User DescriptionsI added a character to a blank map and tried to save it. Callstack from LogLogEditorViewport: Clicking ...

Grass on landscape Component was messed up when painting blend mask if this component has LODBias>0

Assertion failed: (Index >= 0) & (Index < ArrayNum) when importing large Alembic file

Regression testing done on //UE4/Release-4.27.2 CL-18427296 and this issue did occur. [Link Removed] [Link Removed] Below is snips of customers description and proposed workaround:Importing alembi ...

Ragdoll replication on server side is not replicated correctly on client

Ragdoll replication on server side is not replicated correctly on client. The client will see the server players ragdoll dissappear and reappear at the 0,0,0 origin point. AnswerHub Posts: https: ...

4.16.1 Android Development builds crash on start with "unfortunately [App] has stopped"

Destructible doesn't return Impulse data on hit

Destructible doesn't return Impulse data on hit User Description: I'm working on a project with destructible structures. I'd like to apply damage to actors that are hit by fractured destructible m ...

Custom Primitive Data changes done in the details panel on a placed BP Static Mesh resets to 0 after modifiying it

Custom Primitive Data values don't stick when editing them in the detail panel on a placed BP actor containing a Static Mesh Component.  Duplicate of [Link Removed] ...

BSP Converted to Static Mesh with Multiple Materials Will Only Show Element 0 After Migrating and Changing LOD Settings

Crash when spawning multiple HISM at runtime in a packaged shipping build

When adding multiple Hierarchical Instanced Static Meshes on a loop and packaging the project in Shipping configuration the application crashes due to LowLevelFatalError [Link Removed] [Line: 1431] ...

Unnecessary warning "LogChaosCloth: Warning: Invalid pattern data. Num pattern indices 0 != Num welded indices"... for all SKM cloth

This warning is technically correct, panel-based cloth is disabled, but it's expected and there's nothing the user can actually do about it. This comes from a UDN. ...