Unreal Engine Issues
Unreal Engine Issues
Indirect lighting samples incorrect if duplicated levels placed in same persistent level
UE - Graphics Features - Aug 29, 2017Indirect lighting samples were not made correctly when building lighting with umap duplicated via the content browser and registering both source and destination as sublevels in one map. ...
Editor Crashes when compiling a 3d widget after adding array variable
UE - Editor - UI Systems - Feb 23, 2015Editor crashes when user adds array variable (any type) to a 3d widget that is used within a blueprint actor and then compiles the widget. Frequency: 4/4 Crash Reporter: [Link Removed] ...
Copying a grouped MaterialInstanceParameterDetail property that has spaces on it's name does not enclose it in double quotes, and later pasting won't work as expected
UE - Rendering - Architecture - Materials - Aug 24, 2025Copying a grouped MaterialInstanceParameterDetail property that has spaces on it's name does not enclose it in double quotes, and later pasting won't work as expected. The licensee noticed this in a ...
Crash on project open
UE - Gameplay - Blueprint - Feb 5, 2015EDIT: CrashReporter link: [Link Removed] EDIT2: Likely also this crash: [Link Removed] EDIT3: This crash appears under a different Bugg in 4.7: [Link Removed] Engine crashed when attempting to op ...
Crash when calling "Create Widget" node
UE - Editor - UI Systems - Dec 3, 2014User reported a crash when trying to call "Create Widget" node set to UserWidget. Was not able to reproduce internally. User was able to resolve the crash by recreating the widget blueprint and re ...
Editor crashes if user attempts to open a data table that only has one data type after closing and reopening editor
Tools - Jan 30, 2015Editor crashes if user attempts to open a data table that only has one data type after closing and reopening editor Frequency: 2/2 Crash Reporter: Not currently available ...
Ensure trying to Draw Material on a Render Target
UE - Graphics Features - Aug 3, 2016Ensure occurs when attempting to Draw Material on a Render Target. ...
Crash occurs when adding code to custom node in Material Function.
UE - Graphics Features - Mar 16, 2021A Salesforce ticket reports that entering the above code into a custom node in a Material Function causes a crash. I was able to repro his crash reliably. This is a regression. Working as expected ...
Live: Crash when opening a blueprint who's component was edited in VS
UE - Gameplay - Blueprint - Oct 31, 2014Added functionality to a blueprint component through code and built the project in VS. After a hot reload, I saved the blueprint and closed the editor. Reopening the editor and the blueprint cause ...
Editing multiple Math Expressions will crash the editor
UE - Gameplay - Blueprint - Dec 30, 2014Editing multiple Math Expressions will crash the editor. ...