Unreal Engine Issues
Unreal Engine Issues
Opening blueprint debugger crashes editor
UE - Gameplay - Blueprint - Apr 29, 2016The editor crashes upon attempting to open the blueprint debugger through the Window menu. Frequency: 2/2 Regression (Yes) issue (does not) occur in 4.11.2 ...
BoxOverlapActors fails to catch an Overlaped actor with a particular scale, from a particular position
UE - Simulation - Core - Sep 30, 2025BoxOverlapActors fails to overlap a scaled Floor actor with a particular scale, from a particular position and extent. The setup is really specific and described in Steps to Reproduce. The required ...
Sequencer Playlist - Triggering a playlist will crash every other editor on a Multi-user session
UE - Virtual Production - Tools - Sequence Playlist - Nov 24, 2022[Link Removed] ...
Editor becomes unresponsive/freezes when a Geometry Collection is destroyed by a Hit Event while simulating
UE - Simulation - Core - Apr 19, 2023This is a regression. Tested in //UE5/Release-5.1 CL23901901 When a geometry collection is destroyed by an On Hit event the editor becomes unresponsive and never recovers. No crash is generated. ...
Setting a Niagara Bool parameter during runtime causes ensure and the parameter to not be read properly
UE - Niagara - Jun 22, 2020Setting a Niagara Bool parameter during runtime causes ensure ...
FFrame::ReadProperty() occur crash if Blendspace Player node use Function to get BlendSpace Asset
UE - Anim - Runtime - Anim Blueprints - May 25, 2022If user connect a function that returns a Blendspace Asset to a Blendspace Player that BlendSpaceAsset settings are exposed to a pin, it crashes in the package. It does not occur if user do not con ...
Calling RequestStimuliListenerUpdate on actor with one element in AIPerception Sensing Config causes crash
UE - AI - Sep 18, 2015If an AIPerception component is added to an actor and given one element set to either AI Hearing / AI Sight / AI Touch config then the game will crash once Request Stimuli Listener Update is called ...
Fill Data Table from CSV File crashes editor if the data table is open
Tools - May 6, 2019Attempting to use the Fill Data Table from CSV File node will result in a crash if the CSV file is open when running. ...
Crash when adding a pawn that has a SetSenseEnabled node set to true on Begin Play and then playing the game
UE - AI - Apr 20, 2021When adding the SetSenseEnabled node to a Pawn and controlling another pawn that has an AIPerceptionStiumuliSource, the editor crashes. I tested using other senses such as Hearing and the crash occu ...
[AI] Crash when gathering heightfield geometry on worker thread
UE - AI - Navigation - Jun 25, 2025From the body of the ticket: We aim to do as much of the work off the game thread as possible to avoid impacting frame rate. We've recently found a crash during collection of the geometry slices fr ...