Unreal Engine Issues

A crash can occur when modifying a user-defined struct asset that's indirectly accessed through a variable node.

If a user-defined struct-type variable is declared in one Blueprint, and that variable is then indirectly accessed in a second Blueprint through a reference to the first Blueprint, modifying the str ...

Crash when importing Alembic data with a large number of vertices if Merge Meshes is enabled.

Crash when recombining Value Pin after swapping Target Wild Card pin from a Vector2D to a Vector on a Set By-Ref Var node

This is not a regression. Tested in //UE4/Release-4.27 CL18319896 Crash when recombining Value Pin after swapping Target Wild Card pin from a Vector2D to a Vector on a Set By-Ref Var node.  ...

User Defined Struct causing crash due to accessing freed memory when using Stompmalloc

A licensee has reported that Custom Structs can cause a crash when using StompMalloc under certain situations. Regression?: No This occurs in 4.20 ...

Crash in FNiagaraGPUInstanceCountManager::AddDrawIndirect when Android Vulkan Mobile preview platform is enabled

In the Android Vulkan Mobile preview mode, when multiple GPU niagara systems are visible and the user moves the camera around the level it can cause a crash, potentially caused by a race condition o ...

Editor crash after attempting to create layer info in new landscape window

Attempting to create landscape layer info from within the new landscape creation window crashes the editor. Workaround: create the landscape, switch to paint mode, create layer info in paint mode w ...

Renaming Niagara's emitter name in the Timeline panel causes a crash

Renaming an emitter's name in Timeline panel of Niagara editor causes an editor crash. This happens because FViewModelHierarchyOperation constructor is called with null InAnyModel ptr; FViewModelHi ...

Importing a t3d filetype will cause a crash

!!! Changes between version 4.12 and 4.13 for importing these !!! 4.12 There is a crash when importing any t3d (legacy) file through File > Import Into Level using the t3d file option. 4.13 The ...

Crash setting actor rotation via details panel in VR editor

Crash attempting to input value for Rot Y in a floating details panel. Found on //UE4/Release-4.15 CL-3283184. Reproduces in Binary and P4 versions of the editor. Reproduces in //UE4/Main CL-3283 ...

Crash occurs when trying to edit a MetaSound Source asset while a MetaSound Source object is referenced utilizing FObjectFinder in C++

Crash occurs when trying to edit a MetaSound Source asset while a MetaSound Source is referenced utilizing FObjectFinder in C++ Repro Rate: 3/3Fatal error: [File:D:\build\++UE5\Sync\Engine\Source\R ...