Unreal Engine Issues

Actors attached to Spring Arm with rotation lag avoid pitches of 90 and -90 degree

From User Bug Submission: When an actor/component (e. g. a camera) rotates around another object using the rotation lag of USpringArmComponent, it cannot rotate to the top or the bottom. At these ...

Packaging failed! toast does not replace the previous toast

Packaging failed! toast does not replace the previous toast. Users are able to click the Dismiss button for the most recent toast, but not for any others. The Show Output Log link works on all acti ...

Editor Utility Widgets cannot write to the Undo Buffer

When using an Editor Utility it appears that the user cannot write to the Undo Buffer. ...

Play rate value under 1.0 seems ignored when with Render movie to video feature

Is this a regression? Yes, this is not reproduced in 4.22 version When rendered movie have Play rate track, it should show same result for PIE and rendered movie. But play rate below 1.0 seems not ...

Custom Launch Profiles lose selected projects after first re-open of the editor

Selected project resets in a custom project launcher profile only after the first time restarting the editor.  Tested: 4.24.1 CL#10757647 4.25 CL#10873002 ...

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 ...

Playing audio files in Editor doesn't work when Magic Leap Zero Iteration is enabled

When the "Enable Zero Iteration" and "Use ML Audio for Zero Iteration" settings are both checked, the audio doesn't play inside Unreal Editor. This happens in the following cases:Playing an audio fi ...

Dragging and dropping new materials into Dynamic Material Instance slot results in crash

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 ...

AttachComponentToComponent node does not change the location of a Spawned particle system at runtime

You can use the "Spawn Emitter Attached" function as a work around ...