Unreal Engine Issues

Crash when using StaticDuplicateObject with mismathced Source and Destination class types

Starting in Unreal Engine 5.4, StaticDuplicateObject internally switched to using Unversioned Property Serialization (UPS) for performance reasons. However, UPS assumes the source and destination ob ...

HLOD crash when dragging and dropping actors into their own cluster in the HLOD outliner - ALODActor

Enabling Anisotropic BRDF causes crash upon Editor restart

Enabling the Anisotropic BRDF (beta) causes crash upon restarting the Editor. This was reported and tested in 4.25 Preview 2 (CL-12055273). This was reproduced in main 4.26 (CL-12161634). ...

Warp Utils plugin crashes on Editor restart

Enabling the Warp Utils plugin and restarting the Editor causes it to crash. This is a regression from 4.24.3 (CL-11590370). This was reported and tested in 4.25 Preview 2 (CL-12055273) and reprodu ...

D3D HUNG crash - FD3D11DynamicRHI::RHIReadSurfaceFloatData()

This is one of the widespread D3D Hung crashes that have existed since 4.14. This particular callstack has affected around 300 users. The issue has been successfully reproduced on a home PC. Dxdi ...

Text block Outline cropped out at large sizes

Text block Outline cropped out at large sizes. This affects Grid Panels and was additionally tested with Horizontal boxes with the same result Regression: This issue does not occur in 4.14.3 Binary ...

Per-section shadow/collision flags lost when merging actors

Information loss when merging actors such as cast shadow and collision. If one of the actors being merged has a different setting such as not casting shadows. This information will be lost and repla ...

Post Process AnimBP is no longer initialized in Persona Viewport

Post Process AnimBPs used to be processed in the persona viewport. This could have been intentional. Occurs on? 4.14 - 3249277 - NO 4.15 - 3450819 - YES 4.16 - 3466753 - YES 4.17 - 3545186 - YES ...

Using reset to default arrow does not cause blueprint to dirty

When using the yellow arrow beside of settings in the editor to reset values back to their default in blueprints, the blueprint does not dirty. This was working as expected in 4.15, however after ...

Unable to right-click properties in Details panel

REGRESSION: Yes, does not occur in 4.17. User is not able to summon copy/paste options by right-clicking on a property in the Details panel. Reproduced this in Level Editor and Blueprint Editor. ...