Unreal Engine Issues

Crash in RHIBreadcrumbs during loading of Bundled PSO Cache if capturing an Insights trace on Win64 Development

When compiling a PSO, RHI Breadcrumbs can be fed a bad FRHIBreadcrumbNode, resulting in reading random memory and crashing during the recursive node iteration. This only happens when tracing. The i ...

Error in output log when Revision Control submits an asset for deletion with Virtual Assets enabled

With Virtual Assets setup in a project, when an asset is deleted and the changelist then submitted via revision control, the virtualization system will attempt to read the deleted asset. The submit ...

VolumetricCloud crashes in orthographic view

FVolumetricRenderTargetViewStateData structure for the orthographic view is not initialized and the structure has some uninitialized member variables. If uninitialized FVolumetricRenderTargetViewSta ...

Crash after multiple undo-redo of paths' creation.

Open street map building don't cast shadows in raster mode

Reproducible with cascaded and virtual shadow maps. Seems to be a regression from 2024.1.2. All TM 2025.x version have this issue. [Image Removed] ...

Modifying Notify Properties no longer updates the NotifyName in Blueprints with custom GetNotifyName function.

If after placing a notify on an anim sequence timeline you modify a property that is used in the GetNotifyName function of a blueprint notify in engine version previous to 5.5 (5.4.3 for example) th ...

FIndexedCurve::ScaleCurve returns invalid results

Calling SetKeyTime in iterating KeyHandlesToIndices array can modify the array order, so it breaks the iterator. Perhaps ShiftCurve also has the same problem. Here is a work around: void FIndexedCu ...

UDN Bug: ASTC compression becomes greyscale

Bug reported at https://udn.unrealengine.com/s/question/0D5QP00000tOpXN0A0/using-mutable-plugin-results-in-greyscale-textures-on-android-xr?fromCase=1 ...

The Lyra's Readme.md from Github is not clear on how to setup the project for usage

The Lyra's Readme.md from Github is not clear on how to setup the project for usage. Following the https://github.com/EpicGames/UnrealEngine/blob/ue5-main/Samples/Games/Lyra/README.md instructions a ...

Bundled compute PSO compilation stalling tender thread

EA Motive has pointed out a potential bug they found related task graph synchronization and when compiling compute PSOs: [Link Removed]. From the screenshot they sent over, it seems that a task grap ...