Unreal Engine Issues
Unreal Engine Issues
When exporting from a level sequence, the LOD for the bones is based on the camera distance, instead of using LOD0
UE - Anim - Sequencer - Oct 9, 2025When exporting a level sequence to an animation sequence, the bones used will be based on the LOD for the current camera location, instead of exporting LOD0. This is very noticable if you pull the ...
UEditorEngine::OnAllPIEInstancesStarted() called prematurely, multiple times, while PIE clients are starting
UE - Gameplay - Jan 21, 2026Context UEditorEngine::OnAllPIEInstancesStarted() is a virtual function that gets called when launching Play-in-Editor. It can be overridden if the game project chooses to introduce a subclass of U ...
Editor ensure in USceneComponent::OnComponentDestroyed during Blueprint compilation GC
UE - Framework - Components - Jan 15, 2026An editor-only ensure can trigger during BP compilation when garbage collection cleans up transient components created as part of component replacement. During recompilation, old component instances ...
GameplayTagQuery AutoDescription not refreshed after GameplayTag redirect on load
UE - Gameplay - Gameplay Tags - Jan 21, 2026FGameplayTagQuery does not refresh its cached AutoDescription after GameplayTag redirects are applied during asset load. As a result, after renaming a GameplayTag and restarting the editor, the Game ...
AddActorWorldOffset offsets character blueprints faster than other actors
UE - Gameplay - Feb 22, 2016AddActorWorldOffset offsets character blueprints faster than other actors when the character is possessed or anytime after possession/ejection has occurred. ...
Crash when Child Actor Component overlaps Parent static mesh inside of the blueprint editor
UE - Gameplay - Sep 21, 2015Crash when Child Actor Component, that is set to Destroy Other Actor on overlap, overlaps Parent static mesh inside of the blueprint editor Crash Reporter: [Link Removed] ...
Setting Runtime Generation to Static Resets Upon Closing and Re-opening Editor
UE - AI - Nov 23, 2015In Project Settings>Navigation Mesh, setting the Runtime Generation context menu to static reverts to dynamic if the project is saved, closed, and reopened. ...
Deleting Texture 2D asset generated after saving a level in a project with Generate Mesh Distance Fields deleted .umap file
UE - Graphics Features - Oct 16, 2015If "Generate Mesh Distance Fields" is active within the project settings of a project, the .umap of a level will be deleted if a landscape is created and the level is saved, then the 2D texture that ...
Edge Screen Artifacts when calling Widget Blueprints to the Viewport and toggling Fullscreen Mode
UE - Editor - UI Systems - Apr 6, 2016Widgets called to the Viewport with Fullscreen enabled, will eventually cause artifacts to appear on the edges/borders of the screen. There is currently a forums post with multiple users reporting ...
Exporting an Uncompressed AVI Movie from Matinee creates Incorrect Alpha Channel
Tools - Nov 23, 2015When creating an uncompressed AVI movie from Matinee, the final video is darker than what is previewed in the editor. I was able to narrow it down to the compression as the cause of the issue. The ...