v1.0.0

General Changes

• Breaking change: Rename packages to use the @base-ui org.
  The package name has changed from @base-ui-components/react to @base-ui/react.
  (#3462) by @mnajdova

Combobox

• Respect itemToStringValue for onFormSubmit (#3441) by @atomiks
• Add null as an option for the value prop (#3488) by @mnajdova

Menu

• Fix submenu opens with 0 delay (#3459) by @atomiks
• Fix focus not returning to trigger on Esc while pointer rests on popup (#3482) by @atomiks
• Fix always null open method (#3486) by @atomiks
• Allow side axis fallback for submenus by default (#3470) by @atomiks

Navigation Menu

• Fix mount transitions on Positioner in Firefox (#3424) by @atomiks

Number Field

• Fix multiple scrub area support (#3471) by @atomiks

Popover

• Fix mount transitions on Positioner in Firefox (#3424) by @atomiks
• Fix skipped viewport transitions (#3453) by @atomiks

Select

• Respect itemToStringValue for onFormSubmit (#3441) by @atomiks
• Add null as an option for the value prop (#3488) by @mnajdova

Tabs

• Fix indicator positioning in transformed containers (#3439) by @atomiks
• Do not initially select a disabled tab (#3475) by @michaldudak

Toast

• Fix flushSync dev error when toast is added (#3443) by @atomiks
• Fix <Toast.Close> emitting aria-hidden warning on click (#3469) by @atomiks

Toggle Group

• More permissive towards falsy toggle values (#3477) by @mj12albert

Tooltip

• Fix mount transitions on Positioner in Firefox (#3424) by @atomiks
• Fix ignored "modal" setting in Popovers experiment (#3474) by @michaldudak
• Fix shared tooltip closing with trigger gaps (#3452) by @atomiks
• Fix skipped viewport transitions (#3453) by @atomiks

All contributors of this release in alphabetical order: @atomiks, @LukasTy, @michaldudak, @mj12albert, @mnajdova, @oliviertassinari, @pondorasti, @romgrk, @ZeeshanTamboli