mui/base-ui

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Unstyled UI components for building accessible web apps and design systems. From the creators of Radix, Floating UI, and Material UI.

Stars: 11k
Forks: 546
Open beginner issues: 11
Indexed issues: 325
Avg merge: 1d 11h
Merged PRs (30d): 105

Dominant language: TypeScript
License: MIT
Last GitHub push: Sep 18, 2026
Latest indexed: Sep 17, 2026
Contributing guide: Contributing guide
Code of conduct: Code of conduct
Beginner labels: good first issue

Beginner friendly Everything

Open All

322 open issues indexed

[drawer] After eventDetails.cancel() on a close-watcher close, the next Back leaves the page Open

component: drawer type: bug

Difficulty 3/5 1-2 days Newbie friendliness 78/100

mui/base-ui#5767 · Opened Sep 20, 2026
[Drawer] Content-sized drawer is mispositioned when the virtual keyboard opens on iOS Open

component: drawer

Difficulty 4/5 3-5 days Newbie friendliness 52/100

mui/base-ui#5766 · 4 comments · 1 reaction · Opened Sep 19, 2026
[field]: clearing field using button `type=reset` doesn't remove data-filled from field/input Open

status: waiting for maintainer

Difficulty 3/5 1-2 days Newbie friendliness 68/100

mui/base-ui#5765 · Opened Sep 19, 2026
Add `Overflow` component Open

status: waiting for maintainer support: question

Difficulty 5/5 Over a week Newbie friendliness 35/100

mui/base-ui#5740 · 2 reactions · Opened Sep 17, 2026
[select] Disabled trigger's value can't be selected or copied with the mouse Open

component: select status: waiting for maintainer

Difficulty 3/5 1-2 days Newbie friendliness 78/100

mui/base-ui#5736 · 2 comments · Opened Sep 17, 2026
Allow configuring the scroll lock target element Open

status: waiting for author

Difficulty 4/5 3-5 days Newbie friendliness 48/100

mui/base-ui#5732 · 1 comment · Opened Sep 16, 2026
[combobox] Disabled Trigger omits native disabled during SSR and causes a hydration mismatch Open

component: combobox status: waiting for maintainer

Difficulty 3/5 1-2 days Newbie friendliness 68/100

mui/base-ui#5726 · Opened Sep 15, 2026
[combobox] VoiceOver + Safari reads no options after ArrowDown opens the list Open

component: combobox status: waiting for maintainer

Difficulty 4/5 3-5 days Newbie friendliness 48/100

mui/base-ui#5721 · Opened Sep 14, 2026
[dialog] Scroll lock is skipped when the page scroller is <body> under an overflow:hidden <html> Open

component: dialog status: waiting for maintainer

Difficulty 4/5 3-5 days Newbie friendliness 55/100

mui/base-ui#5720 · Opened Sep 14, 2026
Change SelectValueType to accept readonly arrays Open

good first issue

Difficulty 2/5 1-3 hours Newbie friendliness 78/100

mui/base-ui#5707 · 4 comments · Opened Sep 11, 2026
Toast.Root sets aria-hidden on a focusable element when priority is "high" Open

component: toast status: waiting for maintainer

Difficulty 2/5 1-3 hours Newbie friendliness 82/100

mui/base-ui#5659 · Opened Sep 10, 2026
Dependency Dashboard Open

dependencies

Difficulty 4/5 3-5 days Newbie friendliness 15/100

mui/base-ui#5657 · Opened Sep 9, 2026
[dialog] Closing a nested Dialog dismisses its parent inside a closed shadow root Open

component: dialog status: waiting for maintainer

Difficulty 4/5 3-5 days Newbie friendliness 68/100

mui/base-ui#5650 · Opened Sep 9, 2026
[Drawer] Support an explicit drag area inside scrollable Content Open

component: drawer status: waiting for maintainer

Difficulty 4/5 3-5 days Newbie friendliness 68/100

mui/base-ui#5649 · Opened Sep 8, 2026
[popover] More forgiving hover traversal across a small gap Open

has workaround

Difficulty 4/5 3-5 days Newbie friendliness 48/100

mui/base-ui#5647 · 2 comments · Opened Sep 8, 2026
[Slider] A cancelled touch drag leaves document listeners armed; the next tap anywhere commits the stale value Open

component: slider

mui/base-ui#5637 · 1 assignee · Opened Sep 4, 2026
[radio] SSR markup has no aria-labelledby on the radiogroup and tabindex="-1" on every radio Open

component: radio group type: bug

Difficulty 4/5 3-5 days Newbie friendliness 57/100

mui/base-ui#5597 · 5 reactions · Opened Aug 29, 2026
[context menu] Right-click open is marked as instant Open

component: context menu status: waiting for maintainer

mui/base-ui#5593 · 1 reaction · 1 assignee · Opened Aug 28, 2026
[combobox][select] Decouple auto-unmount from `actionsRef` presence Open

component: autocomplete component: combobox component: select type: bug

mui/base-ui#5587 · 1 assignee · Opened Aug 28, 2026
[preview card] Support accessible preview content for screen readers Open

accessibility component: preview card

Difficulty 4/5 3-5 days Newbie friendliness 52/100

mui/base-ui#5583 · 4 comments · Opened Aug 27, 2026
Portal container receives aria-hidden="true" and data-base-ui-inert Open

component: dialog has workaround type: bug

Difficulty 3/5 1-2 days Newbie friendliness 68/100

mui/base-ui#5577 · 3 comments · Opened Aug 27, 2026
[combobox] Item selected with the mouse during IME composition leaves stale text in the input Open

component: combobox type: bug

Difficulty 3/5 1-2 days Newbie friendliness 78/100

mui/base-ui#5574 · Opened Aug 26, 2026
[combobox] Moving focus to a chip closes the popup and discards the typed filter Open

component: combobox status: waiting for maintainer

Difficulty 3/5 1-2 days Newbie friendliness 72/100

mui/base-ui#5547 · 1 comment · Opened Aug 20, 2026
[combobox] Non-modal popup aria-hides outside content but leaves it tabbable (axe: aria-hidden-focus) Open

accessibility component: combobox

Difficulty 4/5 3-5 days Newbie friendliness 68/100

mui/base-ui#5528 · Opened Aug 18, 2026
[combobox] Prevent inaccessible popup state during exit animations Open

component: combobox status: waiting for maintainer

Difficulty 3/5 1-2 days Newbie friendliness 68/100

mui/base-ui#5519 · Opened Aug 17, 2026
[tabs] Consider generic value typing for Root Open

component: tabs status: waiting for maintainer

Difficulty 5/5 Over a week Newbie friendliness 35/100

mui/base-ui#5516 · 1 comment · Opened Aug 15, 2026
[collapsible][accordion] Find-in-page match is not highlighted on first reveal when a hiddenUntilFound panel uses CSS transitions Open

component: accordion component: collapsible type: bug

mui/base-ui#5513 · 4 comments · 1 assignee · Opened Aug 14, 2026
[combobox] Shift+Home / Shift+End does not extend text selection when Input is inside Popup Open

component: combobox status: waiting for maintainer

Difficulty 4/5 3-5 days Newbie friendliness 52/100

mui/base-ui#5480 · Opened Aug 13, 2026
Indicator for Menu (and other lists), like Tabs.Indicator Open

component: menu status: waiting for maintainer

Difficulty 5/5 Over a week Newbie friendliness 42/100

mui/base-ui#5476 · Opened Aug 12, 2026
[select] Announces completion selected for all items Open

browser: Chrome browser: Safari type: bug

Difficulty 4/5 3-5 days Newbie friendliness 48/100

mui/base-ui#5472 · Opened Aug 12, 2026
add attribute to indicate animating elements Open

type: new feature

Difficulty 4/5 3-5 days Newbie friendliness 48/100

mui/base-ui#5433 · Opened Aug 8, 2026
[number-field] Input displays one number while submitting another for implausibly formatted text Open

component: number field type: bug

Difficulty 3/5 1-2 days Newbie friendliness 78/100

mui/base-ui#5424 · Opened Aug 6, 2026
[navigation-menu][docs] Clarify purpose + focus behaviour, and point disclosure-style nav dropdowns to Popover Open

component: navigation menu

Difficulty 2/5 Half a day Newbie friendliness 72/100

mui/base-ui#5413 · 1 comment · 1 reaction · Opened Aug 4, 2026
[Popover] Outside press / iframe: non-modal Popover stays open when interacting inside a same-origin iframe Open

component: popover

Difficulty 4/5 3-5 days Newbie friendliness 58/100

mui/base-ui#5410 · 6 comments · Opened Aug 4, 2026
[discussion] Add Phone Number component? Open

type: new feature

Difficulty 5/5 Over a week Newbie friendliness 35/100

mui/base-ui#5380 · 1 reaction · Opened Jul 30, 2026
[toolbar] Disabled Toolbar.Input still accepts IME composition text Open

component: toolbar status: waiting for maintainer

Difficulty 3/5 1-2 days Newbie friendliness 74/100

mui/base-ui#5366 · Opened Jul 29, 2026
[select] Permanent main-thread freeze (infinite render loop) on open/close under CPU load Open

component: select

Difficulty 5/5 Over a week Newbie friendliness 38/100

mui/base-ui#5358 · 4 comments · 1 reaction · Opened Jul 28, 2026
[popover] Expose an imperative updatePosition() API for Popover Open

component: popover type: bug

Difficulty 3/5 1-2 days Newbie friendliness 68/100

mui/base-ui#5347 · 5 comments · 2 reactions · Opened Jul 27, 2026
Slider: VoiceOver announces stale value when navigating with VO cursor (blur/focus cycle fires before value update) Open

component: slider

Difficulty 2/5 1-3 hours Newbie friendliness 68/100

mui/base-ui#5296 · 5 comments · Opened Jul 21, 2026
[drawer] Default <Radio.Root> span gets ignored within <Drawer> Open

component: drawer has workaround type: bug

Difficulty 2/5 1-3 hours Newbie friendliness 68/100

mui/base-ui#5286 · 2 comments · Opened Jul 20, 2026
[floating-ui-react] enqueueFocus module-level rafId lets concurrent callers cancel each other — keyboard-open focus hop into a roving-focus listbox is racy Open

scope: all components status: waiting for maintainer

Difficulty 4/5 3-5 days Newbie friendliness 52/100

mui/base-ui#5268 · Opened Jul 20, 2026
[combobox] Internal dismiss button's aria-label "Dismiss" is hardcoded and cannot be localized Open

component: combobox

Difficulty 3/5 1-2 days Newbie friendliness 48/100

mui/base-ui#5263 · 1 comment · 2 reactions · Opened Jul 17, 2026
Make CssVars and DataAttributes enums public Open

scope: all components type: enhancement

mui/base-ui#5242 · 2 comments · 1 assignee · Opened Jul 15, 2026
[a11y] Focus guard sentinels are exposed as nameless buttons in WebKit (axe button-name violation) Open

type: expected behavior

Difficulty 3/5 1-2 days Newbie friendliness 55/100

mui/base-ui#5237 · 1 comment · Opened Jul 15, 2026
[combobox] Predicate function for `autoHighlight` Open

component: combobox type: new feature

Difficulty 3/5 1-2 days Newbie friendliness 55/100

mui/base-ui#5205 · Opened Jul 10, 2026
[dialog] Rationale for `aria-expanded` on `Dialog.Trigger` (modal dialogs) Open

component: dialog

Difficulty 4/5 3-5 days Newbie friendliness 45/100

mui/base-ui#5190 · 2 comments · Opened Jul 9, 2026
[select] popup is not removed from the DOM after closing. Open

component: select type: expected behavior

Difficulty 3/5 1-2 days Newbie friendliness 55/100

mui/base-ui#5184 · 1 comment · Opened Jul 8, 2026
[autocomplete] Support vim-style Ctrl+N/Ctrl+P keyboard navigation Open

component: autocomplete type: new feature

mui/base-ui#5146 · 2 comments · 1 reaction · 1 assignee · Opened Jun 30, 2026
[Menu] [Select] [Checkbox] [Switch] [RadioItem] provide focusableWhenDisabled Open

component: checkbox component: menu component: select component: switch

Difficulty 4/5 3-5 days Newbie friendliness 55/100

mui/base-ui#5139 · 4 comments · Opened Jun 29, 2026
Feature Request: First class support for async react primitives Open

type: new feature waiting for 👍

Difficulty 5/5 Over a week Newbie friendliness 30/100

mui/base-ui#5133 · 1 comment · 2 reactions · Opened Jun 27, 2026

mui/base-ui

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