Unreal Engine Issues
Unreal Engine Issues
Crash calling user-function in non-editor
Tools - Apr 27, 2020Crash occurs when attempting to call native Pre-Construct in the attached project. ...
Performance issues with World Composition
Tools - Dec 14, 2015Licensee reports performance issues with ULevelStreaming::GetWorldAssetPackageFName, repeatedly constructing an FName for every sublevel. Should cache this. ...
Game mode Login event called before GameMode BeginPlay
UE - Networking - Feb 23, 2016Code / blueprint script for game mode login functions executes before the game mode begin play function. ...
Overriding Component class does not work properly in grandchild class BP
UE - Framework - Blueprint - Feb 22, 2023If you set ComponentClass override in child class BP and grandchild class BP respectively, it is ignored in grandchild class. This issue is probably related to [Link Removed] ...
Chaos FieldSystem examples in the engine content add field nodes every Tick, which creates too many components
UE - Runtime - Character - May 5, 2026Can we add the field on construction instead of on Tick to avoid the performance overhead caused by creating too many components? ...
Project Settings for Take Recorder's Animation Recorder do not persist after editor restart
zComponent - Archive - Jun 25, 2021Animation Recorder settings do not persist after editor restart. Can be worked around by setting the values in the EditorSettings.ini file under: [/Script/TakeTrackRecorders.MovieSceneAnimatio ...
Failure to attach component in a non-nativized child Blueprint class to an inherited component from a nativized parent Blueprint class.
UE - Gameplay - Blueprint - May 30, 2018Attachment will currently fail at runtime during load and/or construction if a component from a non-nativized child Blueprint is attached to an inherited component from a parent class that is nativi ...
Blueprint Functional Tests Failing When Run Dedicated Server is Enabled
UE - Automation Test - Feb 28, 2017When Run Dedicated Server is enabled, it appears that functional tests are not able to succeed. The following error is appearing in the Automation Test Results: No functional testing script on map ...
UToolMenus::GenerateWidget can crash while calling PopulateMenuBuilder
UE - Editor - Nov 24, 2023A user reported that UToolMenus::GenerateWidget will crash if UToolMenus::AddReferencedObject is called during the construction of a menu. Using the above in-code repro steps, I can repro this in a ...
BP - Exclusive nativization will fail at cook time if a BP class includes a ChildActorComponent with a Data-Only BP set as the ChildActor class.
UE - Gameplay - Blueprint - Apr 20, 2017Note: This does not occur when the nativization mode is set to "Inclusive" in the Project settings. Current workaround: Ensure that the ChildActor class is NOT a data-only Blueprint, by adding scri ...