Unreal Engine Issues

Wrong height from Chaos::FHeightField::GetHeightAt()

Project Crashes on UAIPerceptionComponent::RegisterStimulus()

Assertion failed: (Index >= 0) & (Index < ArrayNum) [Link Removed] [Line: 785] Array index out of bounds: 2 from an array of size 2 Source Context: 363 return OwnerController->GetPawn(); ...

Instanced subobjects are not always instantiated as expected.

Instantiation of subobjects does not behave as expected when using the DefaultToInstanced UCLASS specifier. The licensee that reported the issue provided a sample project with some ensures added whe ...

Opening Gameplay Debugger while in PIE removes print string output from screen in subsequent PIE modes

If a user opens gameplay debugger ( ' pressed while in PIE), all print string outputs to screen disappear, and will no longer appear during any PIE session until editor is closed and re-opened. Wo ...

Custom events with a struct that has had its pin split will throw an error when adding variables to the blueprint

Custom events with a struct that has had its pin split will throw an error when adding variables to the blueprint. The Struct appears to throw an error when making changes that are seemingly unrelat ...

All open assets close when referenced item deleted

If you delete an asset that is referenced by another asset, all your current open asset windows (ie. blueprints, animations, meshes, etc.) will close, even if they aren't referencing that asset. ...

Crash When Toggling Visibility of Level with Planar Reflection

This crash occurs in 4.19 and 4.20 but not 4.18. Repro'd in 4.19.0-3944462 and 4.20.0-3955769 and 3964322. This is a regression. Per UDN licensee: When I'm showing/hiding levels in editor (in le ...

[Rhino Import]-[Rhino Blocks]-Block is not assigned to any nested layer after reimporting

The base color of a material in unlit mode changes when specular amount is above 0.0

Material's RGB base color values are changed in Unlit mode when specular is greater than 0.  User repro video:  [Link Removed] Tested in: 4.23.1 CL#9631420, 4.25 CL#11574810 ...

Streaming a Widget Class with Remote UMG displays the NO SIGNAL slate on remote devices