Unreal Engine Issues
Unreal Engine Issues
Animation Track in Shot Does Not Animate With Evaluate Sub Sequences In Isolation Enabled
UE - Anim - Sequencer - May 15, 2018When Evaluate Sub Sequences in Isolation is enabled in a shot, other shots inside the same sequences only play the transform track and do not play their animation track Does not affect 4.18.3 Relat ...
Bound Variables In UMG Are Deleted As Unused If Not Used In The Graph Window
UE - Editor - UI Systems - Mar 18, 2020If a variable is bound in the Design Window of a User Widget asset it will be deleted if you use the menu option "Delete all unused variables". Found in 4.24.3 CL#11590370 Reproduced in 4.23.1 CL#9 ...
Mutable compile hangs indefinitely when using Customizable Object Extension Data Constants
UE - Anim - Mutable - Oct 25, 2025I am getting a CO compile to hang indefinitely while compiling. It seems to be caused by the optimization in LocalLogicOptimiserAST that tries to convert 3+ conditionals into a switch statement. It ...
Meta Quest - Visual Artifacting in right eye with Lumen enabled and effects quality set to High
TM - VR - May 9, 2025Reported in SF [Link Removed] On Meta Quest headsets, when Lumen is enabled for VR, setting the Effects Quality to High can cause visual artifacts to appear in reflections in the right eye of the h ...
Crash when editing gameplay tag query in a structure
UE - Gameplay - Blueprint - Feb 20, 2017When I try to edit Gameplay tag query in a blueprint structure the editor crashes. Regression: No. This issue affects versions: 4.15, 4.14.3, 4.13.2 (Binary Versions) ...
Trigger Volume Blocks First-Person Template Projectile
UE - Simulation - Physics - Nov 2, 2015When playing in editor, if you fire your weapon at a trigger volume, the projectiles will bounce off of the volume, regardless of the fact that the collision is set to Query Only. This collision als ...
Difference in Shader Complexity view mode between Static Mesh and Painted Foliage Actors after Enabling 'Dbuffer Decals' in Project Settings
UE - Graphics Features - Oct 19, 2016The 'Shader Complexity' view mode is rendering differently between regular Static Meshes and Painted Foliage instances after enabling 'DBuffer Decals' The user is reporting that this does not seem ...
Text block Outline cropped out at large sizes
UE - Editor - UI Systems - Mar 8, 2017Text block Outline cropped out at large sizes. This affects Grid Panels and was additionally tested with Horizontal boxes with the same result Regression: This issue does not occur in 4.14.3 Binary ...
Camera Cut tracks don't work in some packaged code projects
UE - Anim - Sequencer - Apr 10, 2017Camera Cut tracks don't work in some packaged code projects Regression: YES Working: 3249277 (4.14.3) Broken: 3348071 (4.15.1) Working: 3383544 (4.16 Main) ...
Hang occurs on Mac when Japanese input is selected and the window to select the parent class for a new Blueprint is opened with the All Classes section expanded
UE - Platform - Apple - Aug 10, 2017The Editor will hang on Mac if Japanese input is selected on the Mac and the window to select the parent class for a new Blueprint is opened with the All Classes section expanded. REGRESSION: No. T ...