Unreal Engine Issues

Unfocused Standalone window has reduced performance

User description: When I run two windowed standalone instances to test multiplayer, the unfocused window gets about 2-5 fps...but if I focus on it, smooth 120fps, yet the opposite screen is now onl ...

Snapping Pivot to Vertices is Difficult using New Default Keyboard Shortcuts

A licensee requested this ticket be entered as a bug report. The pivot vertex snapping functionality has changed and no longer functions as it did in prior versions of the engine. Somewhere the key ...

Cannot paint landscape layers onto tiled landscapes

paint layers do not take effect on all tiled layers that have a material incorporated if a user attempts to paint on them from the persistent level. ...

SetStaticMesh does not replicate

Using OnRep_StaticMesh() in code or using the Set Static Mesh node does not replicate across server/client in game. ...

Media Sound Wave Does Not Play after Packaging

After testing multiple different ways to get a Media Sound Wave to play in sync with the associated Media Player Asset, I feel it is very hard to get the sound to even play. Not mentioning getting i ...

D3D HUNG crash with Aftermath result: CullLights

This is a specific subset of D3D HUNG crashes from [Link Removed]. This JIRA is for the crashes with the following results from Aftermath: [105]LogRHI:Error: [Aftermath] Status: Timeout [105]LogR ...

Memory leak when Lumen is disabled but r.MeshCardRepresentation=1

When Lumen is disabled, but the cvar "r.MeshCardRepresentation" is set to 1, Lumen will continuously enqueue object removal from the Lumen Scene, without ever emptying the array of primitives to rem ...

Crash retargetting AnimBP with "Allow remapping to existing assets" enabled

4.12 version of the crash: [Link Removed] Error message: Assertion failed: (Index >= 0) & (Index < ArrayNum) [Link Removed] [Line: 833] Array index out of bounds: 1 from an array of size 0 Sourc ...

WP HLOD Crash on Small Cell Sizes

Body Setup of a Static Mesh with Simple Collision will pass validation, but removing it and using only a Complex collision and setting Collision Complexity "Use Complex as Simple" will fail validation: "Bone None requires at least one collision shape".

Context: By default, Unreal Engine creates both simple and complex shapes, then, based on what the user wants (complex query versus simple query), the physics solver will use the corresponding shape ...