Unreal Engine Issues
Unreal Engine Issues
AI MoveTo Blueprint node will zero velocity on Pawn when called, causing a freeze if the Pawn is already moving
UE - AI - Oct 4, 2016AI MoveTo Blueprint node will zero velocity, causing a stop when a new destination is set if the Pawn is currently moving. Regression: Yes Worked: 4.12.5 (CL 3039270) Broken: 4.13.1 (CL 3142249) F ...
Most variable types that do not reference a specific Actor in the level cannot have defaults set in Structs
UE - Gameplay - Blueprint - Feb 7, 2015Most variable types that do not reference a specific Actor in the level cannot have defaults set in Structs. While this makes sense for Actor references, I don't see why a Struct couldn't reference ...
PIE after the Game Instance's parent has a wire disconnected, compiled, then reconnected crashes this project
UE - Gameplay - Blueprint - Sep 18, 2015This user's project crashes on PIE after the Game Instance's parent has a wire disconnected, compiled, then reconnected. Possibly related to [Link Removed], but the call stack is slightly different. ...
Cascade Particles with Module Collision do not behave correctly (die) when colliding with plane in PIE
UE - Niagara - Apr 3, 2018Cascade Particles with Module Collision do not behave correctly (die) when colliding with plane in map QA-Effects example 1.2. I've included a gif showing the issue [Link Removed]. The quality isn ...
CameraRig_Rail actor does not show last index for preview mesh
zComponent - Archive - Feb 19, 2025Do not show the last index in the preview mesh display of the CameraRig_Rail actor. The reproduction test case generates a ring of rails, but only the last index is not displayed. Recommended Cod ...
Macro Libraries do not update after rename
UE - Gameplay - Blueprint - Jan 21, 2015Macro Libraries can only be called by their original name, even after being renamed to something different. ...
Interface functions called as events in Blueprints that implement the interface cannot be set to replicate
UE - Gameplay - Blueprint - Jun 11, 2015Interface functions called as events in Blueprints that implement the interface cannot be set to replicate. When the event node is clicked, the Details panel is empty. Reproduced in 4.7.6, 4.8, and ...
Crash in editor after disabling AISystem in Worldsettings
UE - AI - May 16, 2018After disabling the World Option bEnableAISystem, clicking with the right mouse button on the asset browers (in an empty place) casues the editor to crash. ...
Sequencer Conditions crash - GarbageCollectionVerification
zComponent - Archive - Apr 3, 2025Encountered a crash during the garbage collection phase when using sequencer conditions with subsequence tracks. Specifically, objects appear to break the "Disregard for GC" assumptions. ...
Optimization Viewmodes are not visible when Android Preview is enabled
UE - Platform - Mobile - Apr 11, 2019A user has reported that the Optimization Viewmodes menu does not appear with any options when the Preview Rendering Level is set to Android ES2 or ES3.1. Regression?: Yes This did not occur in 4.2 ...