Unreal Engine Issues

Initial Seed value on Random Stream node has no affect

When using a Random Stream variable to populate a Random Integer in Range from Stream, the Initial Seed value has no affect on the random integer selected. Workaround: Using a Seed Random Stream or ...

Default value for BP struct within BP struct not set

If I set a certain default value for a struct within another struct, it is reset to "None" and the value is not accepted. Below are detailed steps to reproduce as well as a minimal project. Source: ...

If enable iostore and run BulkData.lock twice on the same frame, the second time get pointer will be nullptr

Repeated GPU Timeout after drawing to render target

(Enduring Games) Included Insights trace to show the memory spike in LLM followed by some pretty large time cost frames in the timeline. (Link to insights trace in comments section) ...

When changing the Visibility of a RetainerBox wrapped widget to “Not Hit-Testable(Self&AllChildren)”, the widget incorrectly accepts the hit test

The result of changing the Visibility of a widget placed as a child of RetainerBox is not reflected. Here we have disabled hittest for the Button widget, but hittest is incorrectly accepted. This is ...

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. ...

Failed to generate Nanite data for mesh with bDoFastBuild enabled

If "bDoFastBuild" is enabled on a Static Mesh asset, in-editor it will never be able to have Nanite data built for it, preventing the Static Mesh from using Nanite. There is no way to fix this issu ...

Blueprints copied or moved to another level do not retain variable references to other Actors that are also copied or moved

Blueprints copied or moved to another level do not retain variable references to other Actors that are also copied or moved. Reproduced in 4.7.5 binary and Main (//depot/UE4/Promotable-CL-2507843) ...

Blueprint navmesh modifier does not update navmesh in level

CrashReporter: [Link Removed] The Navmesh Modifier Component in blueprints does not properly update a levels navmesh. ...

GPU Particle Freeze in Fullscreen PIE when Combined with Widget Blueprint using any Widget Element

Certain particle systems freeze when rendered in Fullscreen mode during PIE with Text Block added within Widget Blueprint. From what I could tell it is the GPU particles that are freezing. Note I n ...