Bump @base-ui/react to ^1.9.0

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This PR contains the following updates:

Package	Change	Age	Confidence
@base-ui/react (source)	^1.8.0 → ^1.9.0

⚠️ Renovate does not enforce Minimum Release Age for bump, lockfileUpdate, or rollback updates, so these are raised without a Minimum Release Age check. You will need to manually validate the Minimum Release Age for these package(s).

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Release Notes

mui/base-ui (@​base-ui/react)

v1.9.0

Compare Source

Oct 9, 2026

General changes

• Export CssVariables and DataAttributes types (#​5243) by @​superhooman
• Fix stale focused field state (#​5345) by @​atomiks
• Fix animation waits retaining detached elements (#​5719) by @​flaviendelangle
• Keep item registration in sync when items change under Strict Mode (#​5862) by @​atomiks
• Avoid re-rendering inactive triggers on open and close (#​5865) by @​atomiks

Accordion

• Fix <Accordion.Trigger>'s data-value and data-index attributes (#​5705) by @​cpruijsen
• Apply the native disabled attribute to <Accordion.Trigger> when using native buttons (#​5607) by @​atomiks
• Expand hiddenUntilFound panels synchronously on beforematch (#​5514) by @​aarongarciah

Alert Dialog

• Don't associate a programmatically opened popup with a trigger that did not open it (#​5641) by @​michaldudak

Autocomplete

• Fix autoHighlight for asynchronous results (#​5818) by @​atomiks
• Pass the originating event to onItemHighlighted. Pointer events may be MouseEvent or PointerEvent; typing reports the reason none (#​5838) by @​atomiks
• Decouple automatic unmounting from actionsRef. Call eventDetails.preventUnmountOnClose() in onOpenChange to opt out of automatic unmounting (#​5734) by @​michaldudak

Checkbox

• Prefer aria-label over associated labels (#​5787) by @​atomiks

Collapsible

• Apply the native disabled attribute to <Collapsible.Trigger> when using native buttons (#​5607) by @​atomiks
• Finish closing when the render function removes the panel (#​5890) by @​michaldudak
• Restore animations when a removed panel reopens (#​5891) by @​michaldudak
• Expand hiddenUntilFound panels synchronously on beforematch (#​5514) by @​aarongarciah

Combobox

• Fix stale chip focus after returning to the input (#​5879) by @​mdm317
• Fix autoHighlight for asynchronous results (#​5818) by @​atomiks
• Decouple automatic unmounting from actionsRef. Call eventDetails.preventUnmountOnClose() in onOpenChange to opt out of automatic unmounting (#​5734) by @​michaldudak
• Fix label focus in Shadow DOM (#​5871) by @​lyzno1
• Pass the originating event to onItemHighlighted. Pointer events may be MouseEvent or PointerEvent; typing reports the reason none (#​5838) by @​atomiks
• Reset typeahead state when closing without moving focus (#​5816) by @​mdm317
• Accept readonly arrays for multiple values (#​5710) by @​MonstraG
• Share item indicator implementation (#​5728) by @​flaviendelangle
• Improve mount performance of large lists (#​5819) by @​atomiks
• Combine item store subscriptions (#​5863) by @​atomiks

Dialog

• Keep parent open when closing a nested dialog in a closed shadow root (#​5780) by @​atomiks
• Don't associate a programmatically opened popup with a trigger that did not open it (#​5641) by @​michaldudak

Drawer

• Preserve swipe release velocity after a trailing stationary pointer event (#​5658) by @​padd60
• Fix swipe release velocity on 120 Hz input (#​5845) by @​atomiks
• Remove excess virtual keyboard scroll space (#​5768) by @​atomiks
• Avoid excess keyboard spacing in Chrome on iOS (#​5774) by @​atomiks
• Fix native focus scrolling on iOS 27 (#​5769) by @​atomiks
• Handle CloseWatcher close requests from the cancel event (#​5770) by @​atomiks
• Add x and y options to data-base-ui-swipe-ignore (#​5808) by @​citrus
• Scroll instead of swiping when a drag starts on an SVG (#​5844) by @​atomiks
• Avoid touch event overhead while the drawer is closed (#​5864) by @​atomiks
• Preserve item taps when dismissing the virtual keyboard (#​5882) by @​atomiks
• Avoid retaining unmounted drawers in <Drawer.Provider> (#​5921) by @​atomiks
• Don't associate a programmatically opened popup with a trigger that did not open it (#​5641) by @​michaldudak

Field

• Avoid warnings when an uncontrolled <Field.Control>'s defaultValue changes (#​5881) by @​atomiks
• Fix label focus in Shadow DOM (#​5871) by @​lyzno1

Menu

• Add menu filtering behavior with <Menu.FilterProvider>, <Menu.Input>, and the onItemHighlighted callback (preview) (#​5527, #​5838, #​5840, #​5868) by @​atomiks and @​jjenzz
• Fix nested menus without a root trigger (#​5645) by @​LukasTy
• Fix event listener cleanup in <Menu.Trigger> (#​5764) by @​sai6855
• Release parent menu subscriptions when a submenu unmounts (#​5833) by @​santiago-ramos-02
• Pass the native event to onOpenChange when an item press closes the menu (#​5789) by @​michaldudak
• Close submenu when focus returns through its guard (#​5793) by @​jjenzz
• Toggle submenus on repeated trigger activation (#​5824) by @​jjenzz
• Reset typeahead state when closing without moving focus (#​5816) by @​mdm317
• Fix focus guard loop when the trigger is the only tabbable element (#​5733) by @​atomiks
• Fix hover-out animations when switching between detached triggers (#​4261) by @​michaldudak
• Don't start a viewport transition when the trigger remounts while closed (#​5887) by @​michaldudak
• Keep transition state consistent when reopening a retained popup (#​5738) by @​LukasTy
• Improve mount performance of large lists (#​5819) by @​atomiks

Number Field

• Fire <NumberField.ScrubArea>'s onClick once per click (#​5889) by @​michaldudak

OTP Field

• Fix Safari IME composition over-filling slots (#​5098) by @​atomiks

Popover

• Fix focus guard loop when the trigger is the only tabbable element (#​5733) by @​atomiks
• Fix hover-out animations when switching between detached triggers (#​4261) by @​michaldudak
• Don't start a viewport transition when the trigger remounts while closed (#​5887) by @​michaldudak
• Keep transition state consistent when reopening a retained popup (#​5738) by @​LukasTy

Preview Card

• Don't start a viewport transition when the trigger remounts while closed (#​5887) by @​michaldudak

Radio Group

• Prefer aria-label over associated labels (#​5787) by @​atomiks
• Prevent ignored arrow keys from selecting on refocus (#​5643) by @​tjdsksro90
• Correct inputRef forwarding and cleanup (#​5775) by @​lyzno1

Scroll Area

• Remove presentational viewport role (#​5813) by @​sarthakmalik0810

Select

• Decouple automatic unmounting from actionsRef. Call eventDetails.preventUnmountOnClose() in onOpenChange to opt out of automatic unmounting (#​5734) by @​michaldudak
• Fix label focus in Shadow DOM (#​5871) by @​lyzno1
• Reset typeahead state when closing without moving focus (#​5816) by @​mdm317
• Synchronize root props through the store (#​5589) by @​flaviendelangle
• Share item indicator implementation (#​5728) by @​flaviendelangle
• Improve mount performance of large lists (#​5819) by @​atomiks
• Combine item store subscriptions (#​5863) by @​atomiks
• Accept readonly arrays for multiple values (#​5710) by @​MonstraG

Slider

• Fix label focus in Shadow DOM (#​5871) by @​lyzno1
• End drags on touchcancel and pointercancel (#​5639) by @​brijeshb42
• Fix touch track taps not firing onValueCommitted (#​5779) by @​atomiks
• Preserve single-element array values on pointer interaction (#​5781) by @​atomiks

Switch

• Prefer aria-label over associated labels (#​5787) by @​atomiks

Tabs

• Fix selecting tabs with function values (#​5886) by @​michaldudak

Toast

• Keep timers paused during overlapping interactions (#​5809) by @​lyzno1

Tooltip

• Don't start a viewport transition when the trigger remounts while closed (#​5887) by @​michaldudak

All contributors of this release in alphabetical order: @​aarongarciah, @​atomiks, @​brijeshb42, @​citrus, @​cpruijsen, @​flaviendelangle, @​jjenzz, @​LukasTy, @​lyzno1, @​mdm317, @​michaldudak, @​MonstraG, @​padd60, @​sai6855, @​santiago-ramos-02, @​sarthakmalik0810, @​superhooman, @​tjdsksro90

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Bundle	Parsed size	Gzip size
@mui/material	0B(0.00%)	0B(0.00%)
@mui/lab	0B(0.00%)	0B(0.00%)
@mui/private-theming	0B(0.00%)	0B(0.00%)
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@mui/utils	0B(0.00%)	0B(0.00%)

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