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

UE - Gameplay - Blueprint Editor - May 11, 2021

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 ...

Seamless travel is preventing Server Travel

Gameplay - May 10, 2021

Seamless travel seems to not be functioning properly.  With Run Under One Process set to false and Seamless travel enabled, the ServerTravel command is not bringing the server to the specified map.  ...

Nativized blueprint does not support reading values from TRange structs

Gameplay - Blueprint - May 10, 2021

Compile errors will occur during packaging with Blueprint nativization enabled if e.g. "Get" nodes are placed in a Blueprint on FFloatRange struct types (or any other explicit TRange derivative) and ...

Problems in skeletal mesh merge

UE - Editor - Framework - Asset Build - May 10, 2021

There are a few issues a licensee has found with the skeletal mesh merge operation. See the UDN for more details and the proposed fixes. Note, the issue with the cloth merge is already logged in a ...

Blueprints keep BPTYPE_Const after UCLASS(const) mark up is removed from parent or being reparented

UE - Gameplay - Blueprint Editor - May 7, 2021

Blueprints based on a const class will continue to be BPTYPE_Const after being reparented to a non const class. ...

Actor components added natively can be set to null on derived blueprints during blueprint compilation

UE - Gameplay - Blueprint Compiler - May 7, 2021

A native default subobject can be nulled out during compilation of the owning class in derived Blueprints with circular dependencies.  ...

'recompileshaders changed' doesn't work

Rendering - May 7, 2021

The issue is already fixed in UE5 by CL 14368553. This Jira is created for cherrypick into UE4 ...

GetAllMobileRelevantLayerNames drops those layers which are only connected to RuntimeVirtualTextureOutput Node

Rendering - May 6, 2021

in UMaterial::GetAllReferencedExpressions, the mobile branch ignores every CustomOutputExpressions including RuntimeVirtualTextureOutput. ...

Copy/Pasting static meshes from the level into a blueprint doesn't work

UE - Editor - Framework - Apr 29, 2021

It's likely that this bug has been around for quite a while. The user reports that the issue could possibly be in FCustomizableTextObjectFactory::ProcessBuffer, but this seems more like it could be ...

Crash when using the Blueprint merge tool

UE - Gameplay - Blueprint Editor - Apr 26, 2021

The Editor crashes when merging a change using the Blueprint Merge tool on Linux.  ...