Unreal Engine Issues

RVT Tiles Update Slowly When Enabling Nanite Tessellation On Landscapes

Missing PSO Precaches in the engine

A licensee wanted to report some missing PSO Precaching they found, which they have fixed locally: 1. UCableComponent doesn't implement CollectPSOPrecacheData or call CheckPSOPrecachingAndBoostPri ...

Crash When Loading Cooked Material Assets in Editor Due to Shader Serialization

In Unreal Engine 5.6+, the new shader serialization logic in FShaderMapResourceCode::Serialize does not correctly handle cooked assets that are loaded back into the editor (e.g., from a mounted .pak ...

Renaming variables in parent blueprint resets values for child blueprints

Renaming a variable in a parent blueprint will reset the value of that variable for any child blueprint based on the parent within the level viewport. ...

Timeline Scaling to 0,0,0 scales past 0 to negative values

Scaling objects via a timeline scales past the intended value when attempting to scale to 0,0,0. Instead of ending at 0,0,0 the scale will be set to an extremely small negative value such as -.0019, ...

Crash when Applying Hole Material to Imported Tiled Landscape with World Composition

A crash occurs when importing a tiled landscape, via the 'Levels' window with World Composition enabled, and applying a material to the 'Hole Material' slot. You can also re-apply a default material ...

Landscape Materials Layers Show "none" but are Still Able to Paint on Landscape

Landscape material layers show "none" after generating weight blended layers in landscape paint mode. The landscape layers are painted as normal but do not show that any layer is assigned. ...

Crash when removing native root component from code after creating a Blueprint class based on the native class.

Crash occurs when removing the native root component from code and then attempting to reopen a Blueprint Class asset that was based on the native parent class. Seems like maybe the 'AttachParent' f ...

Hot Reload not updating variables that have their values set in the constructor

If a variable's value is being set in the construction script of a class and then that value is edited (the line itself is edited, not another setting of the variable), hot reload will not update th ...

Build Warning when HotReloading - LogUObjectGlobals:Warning: Guid is already used by

Changing class code causes class instance placed in the viewport to produce the warning message shown below upon hot reload. Also reported that callstack occurs but does not crash the editor. The ...