Unreal Engine Issues

Calling RequestStimuliListenerUpdate on actor with one element in AIPerception Sensing Config causes crash

If 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

Attempting 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

When 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 ...

iPadOS AR App Crashes when ARKit's "Use Scene Depth for Occlusion" is Enabled

Does not crash in 5.4 on same hardware so looks like a regression. Attached Unreal logs indicate source of critical error: 'FARKitCameraOverlayMobilePS' shader uniform expression set mismatched sh ...

FTabManager::FindPotentiallyClosedTab Crash Due to Invalid Array Indexing

As you can see from the above callstack it appears that calling RestoreArea can call FindPotentiallyClosedTab again higher in the stack, which can Remove() an entry from CollapsedDockAreas- this cau ...

Inserting before a FSlateImageRun twice will cause crash

Editor crashes when attempting to play a recorded demo - Assertion failed: IsGameWorld() && GetCurrentLevel()

Editor crashes when attempting to play a recorded demo - Assertion failed: IsGameWorld() && GetCurrentLevel() This issue occurs when using a template project or QAGame. This does not occur when usi ...

Switcher widget causes a crash when dragging a widget out of it and on to the canvas panel

If the user adds two widgets to a switcher and then tries to drag one out of it the editor will crash ...

Ensures in ChaosExamples_fracture map in ChaosDestructionDemo

Ensures trigger when playing in the ChaosExamples_fracture map in the ChaosDestructionDemo project. The ensures seem to happen during different parts. A couple occurrences were when I triggered th ...

Crash when calling SetVector2DParameter on a Niagara Parameter Collection

Crash when calling SetVector2DParameter on a Niagara Parameter Collection. The value for the SetVector2DParameter may or may not have to be changed in order for the crash to occur.  Assertion faile ...