Unreal Engine Issues
Unreal Engine Issues
Mesh reduction modules selection aren't properly applied on engine restart
UE - World Creation - Worldbuilding Tools - May 4, 2023Recent changes in the MeshReductionManagerModule::StartupModule() have introduced issues where it won't respect what reduction modules have been set in the config file. This is a big issue for plugi ...
Calling UMoverComponent::IsModifierActiveOrQueued() immediately after calling UMoverComponent::K2_QueueMovementModifier() will return false
UE - Gameplay - Player Movement - Mover - Mar 10, 2025Calling UMoverComponent::IsModifierActiveOrQueued() immediately after calling UMoverComponent::K2_QueueMovementModifier() will return false. Checking the code, IsModifierActiveOrQueue() calls FindMo ...
[VR] Camera attached to non-root scene component in BP will sink into floor after Reset to Floor Origin
UE - Platform - XR - Aug 12, 2016When a project is first created following the Setting up UE4 to work with SteamVR docs, the Vive camera works correctly and will display at the correct height. However, if at any point during develo ...
Interface functions inherited after a duplicated actor blueprint is reparented to the blueprint it was duplicated from cannot be deleted.
UE - Gameplay - Blueprint - Oct 16, 2015Interface functions inherited after a duplicated actor blueprint is re-parented to the blueprint it was duplicated from cannot be deleted. Note that the inherited function can be deleted in a new ac ...
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. ( ...
[MetaSounds] - If the audio output hits an extreme Gain value, the Audio Meter Widget stops responding
UE - Audio - MetaSounds - May 20, 2022It's possible to have the Audio Meter widget stop responding if you set the Gain really high. It will cease to work as long as the MetaSound window is open. Closing and reopening the MetaSound windo ...
Converting BSP to static mesh on Linux causes the editor to crash
UE - Platform - Linux - Mar 11, 2016Converting a BSP to a static mesh will freeze and crash the editor when done on Linux. Windows does not exhibit the same conversion crash. ...