Unreal Engine Issues

Child component reports Parent during On Hit events instead of itself

This is a regression tested in //UE4/Release-4.27 cl18319896 Child collision component reports its' Parent during On Hit events instead of itself.  ...

Installed Editor doesn't package the right target if Marketplace plugin are installed before first launch

Something is wrong with the TargetInfo.json file generated when they are some Marketplace plugin installed. The client reported this workaround:  Backup the plugins found in Engine\Plugins\Marketp ...

After breaking a level instance without Actor Folders, moving its actors between folders of the world-partition map does not work correctly

If a standard level (without Actor Folders enabled) is added to a world-partition map (with Actor Folders enabled) as a Level Instance, and then that instance is "broken" so that its actors are inco ...

iOS - Windows - Code projects fail to launch and package

Attempts to Launch On to or Package for iOS fail with: LogPlayLevel: Program.Main: ERROR: AutomationTool terminated with exception: AutomationTool.AutomationException: Unabled to build Project C:/Pr ...

After Seamless Server Travel, the Client cannot move the character or see the Server character

After Seamless Server Travel, the Client cannot move the character or see the Server character. On the Server, the Client character appears to be falling in place. Tested in both first and third per ...

Blueprint compile fails after changing the default values of a struct that is part of another struct that makes up a Data Table that is used within the Blueprint.

Changing the default value of a struct that is included as an array in another struct can prevent any Blueprints that use a DataTable made from the second struct from compiling. It appears to be a p ...

Static mesh cube with 3 convex elements jitters when enlarged and settling on a convex static mesh at 30 FPS

Niagara Data Interface "Errors and Warning" section on Module Details not updating when error messages change

This is a regression: it worked correctly up to UE 5.5, but not in 5.6 or mainline latest. Possibly caused by CL 40093049. Class UNiagaraDataInterface provides virtual method GetFeedback(), which a ...

Memory Leak When Raytracing Enabled with Specific Rendering Settings

When a shipping build is packaged using specific rendering settings a memory leak can be observed. The licensee has noted that this leak presents as a 10MB per hour increase in RAM usage. It has a ...

Project packaged on Windows for Linux crashes after exiting on Linux

I noticed this after packaging multiple samples projects on Windows for Linux and running them on my Linux machine. The project exited cleanly, but there was a crash and callstack generated in the ...