Unreal Engine Issues
Unreal Engine Issues
Performance Drop Occurring During PIE When Blueprint is Open
UE - Gameplay - Blueprint - May 20, 2016Having a blueprint open during PIE causes a significant drop in performance. Having multiple blueprints open can almost render more complicated projects unplayable. The user has reported 120 fps wi ...
Plugin fails to compile in 4.11 due to redefinition errors
UE - Foundation - Cpp Tools - Plugin System - May 10, 2016Plugin fails compile in 4.11 / 4.12 due to redefinition of class/struct type (locally). AH user reported LNK2005 error when compiling in 4.11 Regression: YES? - Project with the attached plugin co ...
Merge Actor Tool missing option to deselect Export Specific LOD
UE - World Creation - Worldbuilding Tools - HLOD - Jul 12, 2016In the new non-experimental version of the Merge Actors tool there is no option to disable "Export Specific LOD". In 4.11 when this was disabled it would merge the actors with their respective LODs ...
Function input Bool loses checked value when updating from 4.16 to 4.17
UE - Gameplay - Blueprint Editor - Oct 17, 2017Licensee reported that when updating from 4.16.1 to 4.17.2 the value of a function input Boolean is being reset. It is checked as True in 4.16, but when switching to 4.17, it is no longer checked. ( ...
Changing the value of a text struct variable inside a duplicated function that contains a Make Struct node will reset that value in the original function
UE - Gameplay - Blueprint - Mar 11, 2015Changing the value of a text struct variable inside a duplicated function that contains a Make Struct node will reset that value in the original function. This does not appear to occur with other va ...
[CrashReport] UE4Editor_Kismet!FBlueprintGraphArgumentLayout::OnArgNameChange()
UE - Gameplay - Blueprint Editor - Jul 19, 2017This is a common crash affecting users in 4.16 and has been occurring since at least 4.14 affecting more than 300 unique users. User Descriptionsi made a macro called IsolateYaw and set the input t ...
UConsole HistoryBuffer no longer writing to disk in packaged builds
UE - CoreTech - Sep 7, 2023We started running into issues with the console history not saving after upgrading to 5.2.1. The console history (as in the commands last input into the in-game console) is no longer being saved bet ...
Widget Flickering Observed in RetainerBox with Incorrect LayerId
UE - Editor - UI Systems - UMG - Nov 19, 2024Setting the Phase Count of a RetainerBox to 2 or more may cause other widgets within the same UserWidget to flicker. Upon investigation, we found that during frames where the flickering occurs, the ...
Particle Lights do not honor Lighting Channel assignments
UE - Niagara - Jul 15, 2016Particle system light's module does not use Lighting Channels. The particle system itself will accept lighting from it's assigned lighting channels but the lights spawned from the particle system, n ...
Lightmass GI doesn't work with Material-based color changes
UE - Graphics Features - Sep 4, 2015A licensee is having trouble getting the visual results they want because Lightmass doesn't seem to handle color changes from materials. They are seeing this in 2 cases: (See attached images and tes ...