Unreal Engine Issues
Unreal Engine Issues
Actor Class Reference can take invalid Value, can lead to crash
UE - Gameplay - Blueprint - Oct 4, 2017REGRESSION: Can be certain as this testing was blocked by [Link Removed] Through a specific chain of events (see repro), it's possible to have a non-actor as the value for an Actor Class Reference, ...
Crash hovering mouse over User Defined Struct array variable on Widget Blueprint breakpoint
UE - Gameplay - Blueprint - Jan 22, 2020Looks a crash caused by an access violation when trying to export text from the property for the tooltip. Seems to be limited to arrays of user defined structs and the Widget Blueprint editor. ...
Crash in RHIBreadcrumbs during loading of Bundled PSO Cache if capturing an Insights trace on Win64 Development
UE - Rendering - Architecture - RHI - Feb 17, 2025When compiling a PSO, RHI Breadcrumbs can be fed a bad FRHIBreadcrumbNode, resulting in reading random memory and crashing during the recursive node iteration. This only happens when tracing. The i ...
Crash: Pressing ESC/Trigger while in VR mode after entering VR mode with a camera actor selected
UE - Editor - Workflow Systems - Apr 25, 2017When entering VR Mode with a camera actor selected, attempting to either deselect the camera actor or select another actor causes a crash ...
Nativized widgets that include a custom button cause a crash if Event Driven Loading is enabled
UE - Gameplay - Blueprint - Aug 3, 2018Nativizing a Blueprint that includes a custom button (a Blueprint parented to the "Button" class) causes a crash when Event Driven Loading is enabled. Disabling Event Driven Loading can workaround t ...
Editor reports crashes and terminates for exceptions that would otherwise be cleared by structured exception handlers
UE - Foundation - Core - CrashReportClient - Jun 8, 2020In 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
Tools - Jan 17, 2019Attempting 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.
UE - Niagara - Jan 18, 2024The 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
UE - Audio - Oct 23, 2020This 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 ...
Bone names of ~100 characters or longer crash the editor when baking to control rig
UE - Anim - Rigging - Control Rig - May 15, 2025This is an issue with inconsistencies over rig names and how control names are generated. We expect that a control name will be appended with _CONTROL or _CURVE_CONTROL. But because URigHierarchy: ...