Unreal Engine Issues

Incorrect usage of FText in EnsureMsgf does not trigger a compilation error, leads to crash in shipping

Using incorrect formatting in FText does not cause compilation errors in EnsureMsgf as it does in other functions such as UE_LOG. This causes crashes to sneak through such as a crash on ensure when ...

Instanced static meshes fire an erroneous performance assert about loose parameters.

 "This ensure is intended to catch regressions where rendering programmers add a loose parameter to LocalVertexFactory, breaking dynamic instancing on regular static meshes.  InstancedStaticMeshes c ...

Spline Mesh Collision doesn't work in packaged game when spawning them at runtime

Spline Mesh Components lose their collision in a packaged game when spawning them at runtime, or modifying them via 'Set Start and End' function at runtime. ...

Show Flags are changed to the state that they were set on editor startup when switching to a different level

Show Flags are changed to the state that they were set on editor startup when switching to a different level It appears that the state of Show Flags are stored in the editor on shut down, this is c ...

Inconsistent media texture new style output state across the engine

A simple search for `NewStyleOutput = true` will reveal the many instances where this flag is already forced on, including media plates and media bundles. This however means that we have incompatib ...

Static mesh with simulate physics does not update for clients joining after a session has started

Static mesh with simulate physics does not update for clients joining after a session has started ...

Combo box does not function in packaged build

The ComboBox (string) element for UMG is not correctly displaying, The array options do not appear and can not be selected, for the packaged build, while PIE behaves as expected. Regression: This ...

Static light contained in a blueprint will need lighting rebuilt each time the project is reopened

Static light contained in a blueprint will need lighting rebuilt each time the project is reopened. This only seems to occur for a static light that is parented to a static mesh and then that static ...

Naming a category for a function the same name as a function can cause the My Blueprints tree to display incorrectly (making the category heading look like a function)

Crash occurs when using the VisRT console command in a project launched without the Editor using D3D12

Launching a project outside of the Editor (-game) using D3D12 (-d3d12) results in a crash if the console command VisRT is used in the project. ...