Unreal Engine Issues

Editor reports crashes and terminates for exceptions that would otherwise be cleared by structured exception handlers

In 4.25.1, I added a vectored exception handler to capture unhandled exceptions to the Editor process. This handler runs too soon. It doesn't let the structured exception handlers run first where ma ...

Dedicated server crashes when running a multi-process game in standalone with the Code Editor plugin enabled

Attempting to run a standalone server and client using different processes will crash if the Code Editor plugin is enabled. ...

Fixing Issue in Niagara stack across particle and system stages crashes the editor.

The Update Persistent Audio module has a dependency on a Play Persistent Audio module. When there are two modules in different overview nodes, the automatic fix up can put the Play Persistent Audio ...

Editor crash when ticking then unticking "Toggle Visualization" in a Google Resonance Spatialization Settings window

This is a user reported crash, I was able to re-create in 4.25.4. I'm also assuming this happens in 4.26, however there is a current blocker that stops me from opening this project in 4.26. Linked ...

Enabling "ShowFlag.PhysicalMaterialMasks" causes editor crash when physical material masks aren't yet imported.

When there is a physical material mask asset that has been created and applied to a mesh in the level without having a texture source imported yet, and then "ShowFlag.PhysicalMaterialMasks" is enabl ...

Crash in virtual texturing when material instance texture sample param is switched to a non-square texture

The 4kVT is applied correctly, and you can switch the master material sampler to use the 2048x1024 texture, but if you switch it via the material instance param instead, the crash occurs. ...

Action Rpg Sample Creating a new GameplayCue handler crashes the editor in 4.24

In Action Rpg sample, creating a new Blueprint of type GameplayCueNotifyActor or GameplayCueNotifyStatic, results in an Engine crash. The call stack leads to a PrintF Slate warning message that woul ...

Crash occurs with gameplay tag map variable compiles with default value changed

there is a crash that occurs with gameplay tag map variable compiles with default value changed. This issue occurs no matter what the secondary value of the map is. I was unable to test this issue i ...

Access Violation crash deleting a Widget Blueprint with an unsaved Animation track - FSequencer::Tick()

Encountered an Access Violation crash while deleting an Widget Blueprint with an unsaved Animation Track. The callstack references FSequencer::Tick(). I was not able to reproduce this issue in UE4/ ...

Crash in PlayReverse