Unreal Engine Issues
Unreal Engine Issues
Gameplay ability sending server RPC can disconnect client during seamless travel
UE - Gameplay - Aug 15, 2023During seamless travel, the engine renames kept actors into the transition/destination level. This process results in the actor's components being unregistered and re-registered. For the ability sys ...
Moving a saved duplicate of an OpenWorld level crashes the Editor
UE - World Creation - Worldbuilding Tools - Mar 19, 2025Moving a saved duplicate of an OpenWorld level crashes the Editor. The act of moving the duplicated OpenWorld level crashes the Editor the moment the engine tries to delete the original level, so it ...
Cascade Previewer Has Strange Behavior With Particles With Source Movement Module
UE - Graphics Features - Feb 7, 2017Particles that use source movement will start shooting out violently while in the cascade preview window. You need to have the movement option checked under the view settings. If you also check the ...
Unable to open Unreal Engine after cleaning project in XCode
UE - Platform - Apple - Aug 31, 2020When I have the Epic Games Launcher open as I clean the Xcode project, the top right button will still read "Launch." Clicking on it after the Xcode project is finished cleaning causes the following ...
Crash from FGameplayDebugger when pressing PIE after Dragging PlayerController to Empty Player Component
UE - AI - Jun 16, 2015A crash occurs after dragging an 'Empty Character' actor into the viewport and attempting to add the 'PuzzlePlayerController' as a component by dragging it into the components list via the 'Details' ...
Enabling World Composition Skips Intro Movies
Tools - Jun 24, 2016Startup movies are skipped when World Composition is enabled. Even with the 'Wait for Movies to Complete' option enabled, the startup movie plays for a very short time, and then the level is loaded ...
Compiling specific blueprints in user projects cause editor to freeze and become unresponsive
UE - Gameplay - Blueprint - Apr 28, 2016Several users have reported that their projects cannot compile specific blueprints. In one a character blueprint and another a controller. In both instances, the editor becomes completely unresponsi ...
Static Mesh Editor: Give options for drawing complex/simple collision
UE - Simulation - Physics - Mar 13, 2017The collision mesh and the display mesh are often similar enough to be difficult to differentiate, and there is currently no way to view the collision wireframe without the display wireframe as well ...
Landscape Grass Output Instances begin to float when using the Retopologize Tool
UE - LD & Modeling - Terrain - Landscape - Mar 14, 2017When using the Retopolgize tool on a landscape that is utilizing the Landscape Grass Tool, any pre-existing grass types will begin to float and transform their locations. The only way myself and th ...
When launching from Mac to iOS, the process does not end normally, so the second and subsequent application launches from the iOS device are not performed properly
UE - Platform - Mobile - Apr 16, 2019If you deploy the app to the iOS device using the Mac editor's Launch button or Project Launcher, the second and subsequent launches will fail. The following message is output when startup fails. T ...