Unreal Engine Issues

Update Mesh Section incorrectly sets vertex colors for a Procedural Mesh

This is a regression tested in //UE4/Release-4.27 CL#18319896 Update Mesh Section incorrectly sets vertex colors for a Procedural Mesh. The closer a colors R, G, or B value is to 1.0 or 0.0 the mor ...

Creating a Blueprint Variable for InputActionKeyMappings, and then removing the default input parameter causes crash.

Upon creation and compilation of a Blueprint Variable of type InputActionKeyMappings, when clicking the "X" to remove the default input key parameter causes the editor to crash. ...

Changing Frame Buffer Pixel Format to Float RGB Causes Editor to Crash

Changing Frame Buffer Pixel Format to Float RGB Causes Editor to Crash. Unable to test in 4.19 due to setting not being available. Found in 4.20 CL# 4233996 and 4.21 CL# 4299102  ...

Niagara - "Make Static" nodes do not seem to be working correctly.

When a "Make Static" node is used in a Niagara Function Script or Niagara Module Script to supply the input value for a Static Switch Selector or, a Function Parameter, or a Function Parameter Defau ...

Editor crash when calling SGridPanel::SetRowFill

Calling SGridPanel::SetRowFill on an actor's BeginPlay causes the editor to crash with the callstack provided The reporter mentioned SetRowFill uses if() statement where SetColumnFill uses while() ...

nDisplay - Editor crash when clicking on actors in the ICVFX Panel viewport

Cross building UE4Editor from Windows to Linux has incorrect runtime dependencies on DSO's

Editor that was cross-built on Windows reportedly cannot start (using a Windows Subsystem for Linux or a VM). ...

Editor crashes when attempting to reimport multiple Data Table assets that do not have an associated data source file

Attempting to Reimport multiple Data Tables that do not have associated data source files results in the Engine crashing. When a single Data Table is selected to be reimported, the Editor asks for t ...

Child Actor Audio Volume Makes UE4 Crash

When creating an actor, adding a child actor component to it, and setting that child to a Audio Volume the Editor will crash if you try to change any of the Audio Volume settings. ...

Crash upon attempt to create destructible mesh of EditorSphere or EditorCube

When attempting to create a destructible mesh from the Engine content folder, using the EditorSphere, or EditorCube Mesh will cause the editor to crash.   However, other meshes from this folder such ...