Release Notes 3.1.3

Changelog

Version 3.1.3

Released 30 Sep 2026

Enhancement	Improved error handling when registering for events before the View is ready for bindings
Enhancement	Added file locations to unsupported CSS property logs in Debug and Development builds or when `EnableCSSParserErrorLocations` is enabled
Enhancement	Added support for Nintendo Switch 2 using Nintendo SDK 21
Enhancement	Updated the landing page of the Player application
Enhancement	Improved the Player console to remain a fixed portion of the screen height during DPI transitions
Enhancement Unreal Engine	Improved rendering CPU performance during Paint API calls by 5%-10% through caching `PipelineState` objects
Enhancement Unreal Engine	Added an Unreal Engine console variable to toggle the UI's continuous repaint debug functionality
Enhancement Unreal Engine	Added an additional Depth Stencil texture memory stat
Fix	Fixed missing warnings for incorrect style declarations inside keyframe rules
Fix	Fixed a crash caused by improper uninitialization flow with expired licenses
Fix	Fixed a crash when using Unity with the CoreCLR scripting backend
Fix	Fixed a crash when starting the inspector in `InspectorContextSetting::Mode::Disabled` mode
Fix	Fixed an assert when synchronizing models with newly created virtual lists
Fix	Fixed broken layout positioning caused by lost transformation matrices when using color matrix filters
Fix	Fixed a crash when hovering over SVGs with display none elements in their subtree
Fix	Fixed the `load` and `error` events firing immediately in the same JS call stack when appending a `<link>` element to the DOM.
Fix	Fixed V8 heap corruption when preloading ES6 modules
Fix	Fixed Player shortcuts to apply regardless of whether the GUI or the UI is focused
Fix	Fixed Player auto-scroll to scroll only when new logs have been received
Fix	Fixed a crash when attaching the Inspector in a multiple-view environment
Fix	Fixed `CanvasRenderingContext2D` font handling to properly reject negative font sizes
Fix	Fixed a crash involving slotted `data-bind-if` and `data-bind-for` elements
Fix	Fixed a crash when cloning custom elements
Fix	Fixed a crash when changing the `cohinline` attribute on paragraphs with pseudo-elements or shadow DOM content
Fix	Fixed support for multiple views in the sample break iterator implementation and the Player application
Fix Unreal Engine	Clamped the Gameface Widget texture size if its dimensions exceed the max threshold due to DPI scaling
Fix Unreal Engine	Fixed a visual bug that caused UI elements rendered in the Gameface UMG Widget with Surface Partitioning enabled to be cut
Fix Unreal Engine	Fixed rare crashes caused by an invalid `PixelShader` when using the surface partitioning feature
Fix Unreal Engine	Removed obsolete tracking of the 'CPU rendering memory' stat and rerouted it through the 'Display memory' CPU memory tag
Fix Unreal Engine	Added a missing header for the PlayerOverrides project