Unreal Engine Issues

Compile failure in UHT with combined multi-line / single line comments

Using a single line comment to immediately follow a multi-line comment closing brace results in an illegible compile errors: "error code: CrashOrAssert(3)" Workaround: Include a space between */ an ...

UMG Throbber is not showing in project when using 'Set Number of Pieces' node off of Event tick

If you add a throbber to a UMG Blueprint and use the Graph of the Blueprint to change the 'Set Number of Pieces' and use 'Event Tick' to tick the widget, the throbber widget will not appear on scree ...

'Is Case Sensitive' option on the Switch on String node doesn't toggle correctly

'Is Case Sensitive' option on the Switch on String node doesn't toggle correctly. User Description: The "Is Case Sensitive" option when you use a switch on string function in blueprint doesn't wor ...

The Error message "Failed to add Class "YourClassName". Failed to automatically hot reload the "YourProjectName" module." appears when adding a class to a C++ project

Edit MattK: This is UserWidget specific. If we don't want users to extend this class we should figure out a way to prevent that in our wizards When trying to add a C++ class to a project the follo ...

Crash on Applying a Material with PN Triangles Tessellation to Large Landscape

When applying a Material with nothing in it but PN Triangles turned on to a Large Landscape, the engine will crash. Also Reproduced in Main Promotable-CL-2513846 ...

called custom functions do not update parameter names upon compile, must be replaced

Parameter names do not update on custom functions that are already called in event graph after compiling blueprint. ...

When Character BP actor is rotated, "Mesh" component translation differs on Client and Server

Occurs in: Releases 4.7.6 CL:2510309 Main 4.8 CL:2513846 When Character BP actor is rotated, Translation is changed for "Mesh" component on Client. Server appears as expected. This isn't typicall ...

Any Alpha value set in a FLinearColor used to draw a line on a Canvas HUD is ignored when the line is drawn

If an Alpha value is set in a FLinearColor that is used to draw a line on a Canvas HUD, the Alpha value is ignored when the line is drawn. A comment in BatchedElements.cpp indicates that some legac ...

RebuildRenderData is still not safe during cook time

https://answers.unrealengine.com/questions/215370/some-sprites-tiling-into-tiny-grid-in-packaged-ver.html UTexture2D::ConditionalPostLoad doesn't wait for the render data to finish caching outside ...

DOF sky distance doesn't work correctly