Unreal Engine Issues
Unreal Engine Issues
Freezing when changing levels in VR preview
UE - Platform - XR - Apr 2, 2018When changing levels in VR preview it appears to freeze for 30 seconds. This does not happen the first time VR preview is used during the editor session. However, after using VR preview once and cha ...
Access Violation crash deleting a Widget Blueprint with an unsaved Animation track - FSequencer::Tick()
UE - Anim - Sequencer - Jun 19, 2017Encountered an Access Violation crash while deleting an Widget Blueprint with an unsaved Animation Track. The callstack references FSequencer::Tick(). I was not able to reproduce this issue in UE4/ ...
Loss in Specularity on Skin Shading when Shadowed by Indirect Capsule Shadows using r.sss.checkerboard 0
UE - Graphics Features - May 23, 2017A licensee is reporting incorrect or over exaggerated loss of specularity on the Subsurface skin shading model when shadowed by indirect capsule shadows, and then modifying the r.sss.checkerboard se ...
Landscape Tutorial Missing a Word
Docs - Dec 9, 2019In the Landscape Tutorial Overview there is a word missing in the tutorial. ...
Previewing Nav Mesh in DX12 Mode causes Editor to Crash
UE - Graphics Features - Mar 7, 2016In UE4.11p6, previewing Nav Mesh in DX12 Mode causes Editor to crash. ...
Collision Not Working on Dynamically Spawned Objects While Using 'Cook Blueprint Component Data for Faster Instancing at Runtime'
UE - Gameplay - Blueprint - Dec 13, 2016Dynamically spawned objects' collision does not seem to be working in a packaged game when the Cook Blueprint Component Data for Faster Instancing at Runtime option is enabled. Found in 4.14.1. Un ...
StateTree : Crash when executing GetPropertyRef in SubTree linked via Linked Asset
UE - AI - StateTree - Aug 26, 2025A crash occurs when GetPropertyRef node is executed from a SubTree that is linked within a StateTree, which itself has been linked from a parent StateTree via a Linked Asset ** . The processing con ...
Color and Opacity animation option does not play for Button component
UE - Editor - UI Systems - Aug 25, 2017Color and Opacity animation option does not play for Button component, this occurs both in the Widget editor and during play. This issue is not a regression Versions Tested: 4.16.3 - CL: 3561208 - ...
Data like Camera Tracks can get corrupted inside Level Sequences when Undoing some operations
UE - Anim - Sequencer - Jul 22, 2025Camera trucks can get in a invalid state when you undo certain operations. One example would be undoing a camera set that has been added to a camera track. When you undo that operation, other camera ...
Viewport camera teleports to past position on Alt + LMB + Drag after camera cut lock
UE - Anim - Sequencer - Apr 13, 2018When you unlock the viewport from "Lock viewport to Camera Cuts" of a camera cut, tumbling the camera can teleport the view into the camera's previous(before entering the camera cut) position and tu ...