Unreal Engine Issues

Grass on landscape Component was messed up when painting blend mask if this component has LODBias>0

BP function node inputs can unintentionally add or clobber metadata

Blueprint inputs are added to nodes as metadata, with the key set to the pin name and the value set to the default for that pin. Since blueprint functions allow you to name your own input pins, this ...

Details panel for Actor Component is blank in any Blueprint that derives from a code class using that Actor Component after the Actor Component's class name is changed

Changing the name of an Actor Component code class in a project results in any existing Blueprints that derive from code classes that use that Actor Component to not display the Actor Component's pr ...

Unable to change Blueprint Child Variable values in Python

Using the Python function unreal.SystemLibrary.set_bool_property_by_name() to change the default variable values of a child Blueprint do not work as intended. Tested in 4.20.3 (CL - 4369336), 4.21. ...

Static array based on an enum does not show the enum element names if a C-style cast is used with a space between the type being cast to and the enum

A static array based on an enum does not display the enum names in Blueprints if the size of the static array uses an explicit C-style cast with a space between the type being cast to and the enum b ...

Enabling Merge GC Clusters and Blueprint Clustering causes a packaged Window project to crash

Enabling the check boxes for Merge GC Clusters and Blueprint Clustering causes packaged Windows projects to crash on startup. The log and dump files regarding this crash have been attached to this t ...

[Feature Request] Mouse-wheel zoom logic seems incorrect in UI Designer

When using the mouse wheel to zoom the Designer view, the behavior is not intuitive. (ZoomLogicDesigner.gif) in the Designer view, place the mouse near the top left corner. Use the mouse wheel to ...

Replicated component leak on clients if RPC forces construction and server destroys it in the same frame

RPCs called on actors force a channel to be opened and the actor to be replicated at least once. If the RPC is called on a new replicated component while the actor channel is already open, but the ...

When r.CustomDepth = 3 (Enabled with Stencil), the values of SceneDepth and CustomDepth are different on IOS

The user wants to express using the difference between SceneDepth and CustomDepth. However, when r.CustomDepth = 3 (Enabled with Stencil), the expression can not be realized because the SceneDepth a ...

When the engine version updated, partial data of TMap/TSet type of DataTable is missing

When updating to 4.21, Element previously added to DataTable is missing. This only occur when you move to 4.21. If it change from 4.19 to 4.20, DataTable will keep data. it can restore broken data b ...