Unreal Engine Issues

ULocalPlayerSaveGame::IsSaveInProgress always returns true after a save completes

ULocalPlayerSaveGame::IsSaveInProgress always returns true after the first save is requested. This is due to the return statement checking if either an error has yet to be reported or a success has ...

Nanite Mesh Dither Opacity Mask Not Working in 5.6.0

In Unreal Engine 5.5.4, the Dither Opacity Mask option in a Masked material works correctly on Nanite meshes. However, in version 5.6.0, the dithering effect no longer applies to Nanite meshes. ...

Copy/pasting folders and root tracks doesn't paste the root tracks

Nanite Landscapes in Non world partition maps has missing sections

Nanite in non world partition worlds builds with missing section, almost half the landscape is missing. Looking at the nanite overdraw as attached, it shows an interesting pattern. ...

UE5.6+ - Mutable - IDPrefix crash when combining Child Objects, Add to Mesh Component and Extend Mesh Section.

So the issue seems to be a combination of Add To Mesh Component and Extend Mesh Section. I've tried this in Epic Launcher 5.6, 5.6 in-house modified engine as well as ue5-main 5.7 from git (editor ...

UMaterialFunctionInterface not being tagged as BlueprintType makes some editor scripting scenarios difficult

UMaterialInterface is BlueprintType, but UMaterialFunctionInterface is not. This makes it difficult to port some BP logic that works with materials to the material layer system. Crystal Dynamics wou ...

Crash when travelling during ability activation when URL contains "#"

This issue is related to [Link Removed], where the "?listen" option sent on the URL to clients could cause issues with RPCs being called locally during travel. The fix to remove the "?listen" option ...

Assets on paths with speed parameters are sped up in Path Tracer exports

Reported in SF [Link Removed] In Path Tracer renders, all paths with a speed component (vehicles, bicycles, custom) will render at an increased speed than specified in the exported render. This is ...

Enabling Substrate causes MaterialGraph node previews to render black

Node previews in MaterialGraph with Substrate enabled render solid black in 5.6. The latest 5.5 engine does render previews correct with substrate enabled. ...

Mover standalone backend allows non-persistent sync structs to carry over between frames

Only certain sync state structs are intended to persist between frames. These are configured via MoverComponent's PersistentSyncStateDataTypes array. There appears to be a bug in the way the standa ...