Unreal Engine Issues
Unreal Engine Issues
DiffuseIndirect_Lumen_3 parameter missing and causing crash with Screen Space reflections and Lumen Async Compute
UE - Graphics Features - Lumen - May 3, 2025When the Reflection Method is set to Screen Space and Lumen reflections async compute is enabled Unreal will crash because DiffuseIndirect_Lumen_3 parameter missing, due to how DenoiserOutputs are o ...
Crash when clicking on tutorial prompt for signing keys on Mac
Tools - May 2, 2017Attempting to package for TvOS on Mac without a signing key produces an error in the message log informing the user of the missing key. The error has a link to a tutorial on how to resolve it. Click ...
Matinee not triggering when moved from one level to another
Tools - Oct 19, 2015It appears that if you create a Matinee in a Sublevel, and then subsequently move the matinee between levels. It will not keep associations with the attached actors in the Matinee and not trigger e ...
Editor crashes sporadically in OSX 10.12
UE - Platform - Apple - Oct 27, 2016The editor is crashing sporadically in OSX 10.12. I have just started hitting this crash ~ 3-4 times a day usually when opening a new tab of some sort in the Mac editor Looking at the various repo ...
Enabling "Support Deferred Rendering with Metal" Crashes on IOS device
UE - Platform - Mobile - Feb 8, 2017After enabling "Support Deferred Rendering with Metal" and then launching to an IOS device (in this case iphone 6+) the game will no longer open and run. REGRESSION? Yes Worked in Binary 4.13.2 C ...
DoNotCreateDefaultSubobject is not recognized when an actor is duplicated
UE - Foundation - Core - Mar 17, 2017Adding DoNotCreateDefaultSubobject to a class after placing an instance of that class in the viewport will fail to be recognized when duplicating the placed instance. This is not a hot reload issue ...
Backspace Key not activating when working with 3D Widgets
UE - Editor - UI Systems - Mar 27, 2017Backspace Key not activating when working with 3D Widgets and will not be called when working with the Widget Interaction component. User says they are having a similar problem with the enter key in ...
Map load stalls in texture streaming code
UE - Graphics Features - Jun 13, 2017A change was made to AActor.GetComponents which appends the results instead of resetting the output array. This seems to only impact 2 places in the code, and has a big side effect in the texture st ...
No Blueprint compile warning with an improperly copied component reference
UE - Gameplay - Blueprint - Sep 19, 2017When a blueprint's component reference is copied and pasted into a blueprint that does not have the copied component, the blueprint with the copied reference compiles Note: This occurs when the cop ...
Unable to use wrap with or replace with for widget components that are children of an expandable area component
UE - Editor - UI Systems - Sep 29, 2017With the expandable area widget component, you are unable to use the wrap with or replace with for widget components. This issue does not appear to be a regression. Versions Tested: Issue occurs in ...