Unreal Engine Issues

User-Defined Variables Reset to Null When Not Marked as Editable

When running the construction script of an actor blueprint, user-defined variables are reset to NULL each time the script is run. This seems inconsistent, as if the variables are set to Expose on S ...

Crtl Z Does not Undo Settings Edits in Landscape mode

This was discovered through reworking a test case. I noticed the bug when I was hitting crtl Z through all of my edits and noticed that the brush size value did not change even though the notificati ...

Post Process volume change Unable to PIE and Crash

There is a compound issue with using the post process volume. Editing the value by using the mouse or dragging on the color wheel does not trigger this issue. Using the keyboard to edit this value c ...

BUG IN CLIENT OF LIBDISPATCH: crash on KeyPress down in WebBrowser

FCEFWebBrowserWindow::OnKeyDown() InternalCefBrowser->GetHost()->SendKeyEvent(KeyEvent); is processed on the UE4 GameThread, inside the Chromium Embedded Framework (CEF) it appears to call a syst ...

Skeletalmesh generated LOD have issue with vertex color displacement

This one should be fix in the squeletalmesh quadric reduction own by the geometry tools. ...

Meshs in a hidden sublevel may generate incorrect navmesh

If the level has hidden sublevels, the regenerated navmesh result appears to have a hidden sublevel mesh placed at the origin. Apparently, the reason is that bNavigationRelevant is no longer consid ...

Creating a new theme is lost once the editor is restarted

Creating a theme is undone when restarting the editor. The .json file seems to become disassociated from the editor, the theme is reset back to the previous theme, and the new theme isn't available ...

pose search cook determinism issue

CreateDynamicMaterialInstance will pull from the base rather than overridden mesh on SkinnedMeshComponent when run from construction script

When UPrimitiveComponent::CreateDynamicMaterialInstance is called on a skinned mesh, and the input material is invalid, we call USkinnedMeshComponent::GetMaterial to get the base material on the exi ...

Anim State Notifies Don't Consistently Fire Begin/End Events for Looping Anim Sequences

If you have an Animation Notify State and set it up on an animation to start at the exact beginning of the anim sequence and finish exactly at the end (I have attached a picture of this). It doesn't ...