Mac - Xcode fails to build C++ project with a Shell Script Invocation Error

Platform - Mac - Oct 5, 2020

This does not occur in 4.25.4 Binary and is a regression. ...

Unable to open Unreal Engine after cleaning project in XCode

Platform - Mac - Aug 31, 2020

When I have the Epic Games Launcher open as I clean the Xcode project, the top right button will still read "Launch." Clicking on it after the Xcode project is finished cleaning causes the following ...

CoreSymbolication.framework fails to load on macOS 11 Big Sur

Platform - Mac - Aug 20, 2020

CoreSymbolication.framework has moved, likely into the system library cache. The function, FApplePlatformSymbolication::EnableCoreSymbolication probably needs to be updated in order to accommodate.d ...

UBT relies on a stale Multitouch framework location

Platform - Mac - Aug 10, 2020

UBT complains about not being able to locate Multitouch.framework ...

New VR-Basic level triggers Metal validation layer assertion

Platform - Mac - Mar 16, 2020

This was discovered externally and reported on UDN here: https://udn.unrealengine.com/questions/563268/mac-editor-crash-when-disable-ambient-occlusion.html ...

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

Platform - Mac - Feb 12, 2020

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

MFI Gamepad support on Mac

Platform - Mac - Jan 27, 2020

We are supporting a few controller on Mac (they can be seen in HIDInputInterface.cpp) but since Catalina it is possible to use the same GameController API as in iOS. This is an important feature fo ...

Editor stalls on Mac after key up, mouse up

Platform - Mac - Dec 19, 2019

UDN user reported a performance hit on Mac with the latest Hotfix release when the user is interacting with the editor either through keyboard or mouse input. This performance hit is noticeable whe ...

Mac - After clicking, the the Mouse position resets

Platform - Mac - Dec 17, 2019

Unexpected behavior with mouse position on Mac If 'Show Mouse Cursor' is true the problem does not occur. Catalina 10.15.1 ...