mui/mui-x

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MUI X: Build complex and data-rich applications using a growing list of advanced React components, like the Data Grid, Date and Time Pickers, Charts, and more!

Stars: 5.8k
Forks: 1.8k
Open beginner issues: 1
Indexed issues: 1.1k
Avg merge: 2d 10h
Merged PRs (30d): 148

Dominant language: TypeScript
License: No license data
Last GitHub push: Sep 18, 2026
Latest indexed: Sep 20, 2026
Contributing guide: Contributing guide
Code of conduct: Code of conduct
Beginner labels: good first issue

Beginner friendly Everything

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1,082 open issues indexed

[data grid] Aggregation cannot be cleared from the column menu: published v9 build never removes the column from the aggregation model Open

feature: Aggregation scope: data grid support: premium standard type: bug

Difficulty 3/5 1-2 days Newbie friendliness 76/100

mui/mui-x#23639 · 3 comments · 1 reaction · Opened Sep 18, 2026
Sever side tree data, child rows order issue Open

feature: Server integration scope: data grid support: premium standard type: bug

Difficulty 3/5 1-2 days Newbie friendliness 64/100

mui/mui-x#23635 · 1 comment · Opened Sep 17, 2026
[Chat] Support `localeText` on `ChatProvider` for headless/composable usage Open

scope: chat type: enhancement

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

mui/mui-x#23632 · 1 comment · Opened Sep 17, 2026
[chat] No way to tell "history not loaded yet" from "conversation is empty" — `ChatBox` flashes its empty state before `listMessages` resolves Open

scope: chat type: bug

Difficulty 4/5 3-5 days Newbie friendliness 56/100

mui/mui-x#23600 · Opened Sep 15, 2026
[data grid] PremiumReorder widget - reordering an item to the bottom is suboptimal Open

scope: data grid support: premium standard

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

mui/mui-x#23596 · 1 comment · Opened Sep 14, 2026
[scheduler] Monthly recurrence locale fns receive an English token (aria) or a pre-formatted name (label), no stable weekday token Open

l10n scope: scheduler

Difficulty 4/5 3-5 days Newbie friendliness 74/100

mui/mui-x#23595 · Opened Sep 14, 2026
[scheduler] Agenda view crashes on an empty forward horizon (showEmptyDaysInAgenda: false) — days[0].value of undefined Open

scope: scheduler type: bug

mui/mui-x#23565 · 2 comments · 1 assignee · Opened Sep 9, 2026
CI flakiness watch Open

ci-flake-watch

Difficulty 4/5 3-5 days Newbie friendliness 25/100

mui/mui-x#23561 · Opened Sep 9, 2026
[scheduler] Allow disabling event deletion with `eventDeletion={false}` Open

scope: scheduler type: new feature

mui/mui-x#23559 · 1 comment · 1 assignee · Opened Sep 9, 2026
[scheduler] Add a confirmation dialog when deleting an event Open

scope: scheduler type: new feature

mui/mui-x#23558 · 2 comments · 1 assignee · Opened Sep 9, 2026
Add Kanban component Open

support: question type: new feature waiting for 👍

Difficulty 5/5 Over a week Newbie friendliness 25/100

mui/mui-x#23548 · 1 comment · 2 reactions · Opened Sep 8, 2026
[charts] Include the chart itself in the exported workbook Open

feature: Export plan: Premium scope: charts type: new feature

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

mui/mui-x#23546 · Opened Sep 8, 2026
[charts] Discuss CSV support for the chart data export Open

feature: Export plan: Premium scope: charts type: new feature

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

mui/mui-x#23545 · Opened Sep 8, 2026
[charts] Scope the wide layout for the chart data export Open

feature: Export plan: Premium scope: charts type: new feature

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

mui/mui-x#23544 · Opened Sep 8, 2026
[charts] Heatmap: Customize cell based on coordinates Open

support: pro standard type: enhancement

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

mui/mui-x#23525 · 7 comments · Opened Sep 8, 2026
[data grid] Support computed formula columns Open

plan: Premium scope: data grid type: new feature

mui/mui-x#23519 · 1 reaction · 1 assignee · Opened Sep 7, 2026
[scheduler] Store writers ignore `eventModelStructure` properties without a setter Open

scope: scheduler type: bug

mui/mui-x#23499 · 3 comments · 1 assignee · Opened Sep 4, 2026
[pickers] Deprecate `keepOpenDuringFieldFocus` and replace it with recipes Open

scope: pickers type: enhancement umbrella

Difficulty 4/5 3-5 days Newbie friendliness 50/100

mui/mui-x#23498 · Opened Sep 4, 2026
Issue with security scanning: Bidirectional characters in bundled MUI code are being flagged as a security vulnerability Open

scope: pickers stale status: waiting for author support: premium standard

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

mui/mui-x#23493 · 2 comments · Opened Sep 3, 2026
[scheduler] Model all-day events as timezone-independent dates Open

on hold scope: scheduler type: new feature

Difficulty 5/5 Over a week Newbie friendliness 45/100

mui/mui-x#23490 · 2 comments · Opened Sep 3, 2026
[scheduler][umbrella] Time axis configuration & zoom in the Event Timeline Open

on hold plan: Premium scope: scheduler type: new feature umbrella

Difficulty 5/5 Over a week Newbie friendliness 25/100

mui/mui-x#23482 · Opened Sep 2, 2026
[data grid] Improve print export Open

scope: data grid type: enhancement

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

mui/mui-x#23475 · Opened Sep 1, 2026
[scheduler] Expose the Base UI render prop on Event Timeline event and resource title cell Open

scope: scheduler stale status: waiting for author type: enhancement

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

mui/mui-x#23468 · 5 comments · Opened Aug 31, 2026
[scheduler] Reconcile the armed occurrence with the events prop Open

on hold scope: scheduler type: bug

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

mui/mui-x#23465 · Opened Aug 31, 2026
[scheduler] Dependencies: public API flip and docs Open

on hold scope: scheduler type: new feature

mui/mui-x#23420 · 1 comment · 1 assignee · Opened Aug 25, 2026
[scheduler] Dependencies: arrow editor (type + lag) and immediate cascade on create/edit Open

on hold plan: Premium scope: scheduler type: new feature

mui/mui-x#23395 · 1 assignee · Opened Aug 21, 2026
[scheduler] Dependencies: SS/FF/SF and lag in the auto-scheduling engine Open

plan: Premium scope: scheduler type: new feature

mui/mui-x#23393 · 1 assignee · Opened Aug 21, 2026
DataGrid: text-overflow ellipsis paints clipped '…' artifacts next to overflowing renderCell widget content Open

scope: data grid type: bug

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

mui/mui-x#23332 · 1 comment · Opened Aug 13, 2026
[tree view] Stale item is being rendered in the tree view Open

scope: tree view

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

mui/mui-x#23331 · 1 comment · Opened Aug 13, 2026
[pickers] AdapterDayjs startOf/endOf and getDaysInMonth are wrong on dates predating the timezone standardization Open

external dependency scope: pickers type: bug

Difficulty 4/5 3-5 days Newbie friendliness 54/100

mui/mui-x#23301 · 1 comment · Opened Aug 5, 2026
Server-side filtering: Provide a way to opt out of the blank option in the `singleSelect` filter input Open

feature: Filtering scope: data grid support: unknown type: enhancement

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

mui/mui-x#23243 · 1 comment · Opened Jul 28, 2026
Running autosizeColumns resizes the columns incorrectly when the header text is in 2 lines Open

feature: Column resize scope: data grid type: bug

Difficulty 3/5 1-2 days Newbie friendliness 45/100

mui/mui-x#23234 · 1 comment · Opened Jul 27, 2026
[charts] Enable keyboard activation by default in v10 Open

accessibility breaking change scope: charts type: enhancement v10.x

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

mui/mui-x#23214 · Opened Jul 24, 2026
[charts] Keyboard accessibility for the zoom slider handles Open

accessibility plan: Pro scope: charts type: enhancement

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

mui/mui-x#23183 · 1 comment · Opened Jul 20, 2026
[charts] Add Network Graph / Force-Directed Graph component Open

scope: charts type: new feature waiting for 👍

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

mui/mui-x#23157 · 4 reactions · Opened Jul 15, 2026
[pickers][DateCalendar] - Allow override default size Open

customization: css design scope: pickers

mui/mui-x#23152 · 5 comments · 1 assignee · Opened Jul 15, 2026
[charts] Make LineItemIdentifier dataIndex required and remove LineItemClickIdentifier in v10 Open

breaking change scope: charts v10.x

mui/mui-x#23151 · 1 assignee · Opened Jul 15, 2026
[scheduler] Make `AGENDA_VIEW_DAYS_AMOUNT` configurable Open

scope: scheduler support: premium standard type: enhancement

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

mui/mui-x#23104 · 2 comments · Opened Jul 8, 2026
[pickers] DatePicker with variant="standard"/"filled" + helperText causes NVDA to repeatedly announce the label due to aria-live on the group root Open

feature: Keyboard editing scope: pickers type: regression

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

mui/mui-x#23101 · 1 comment · Opened Jul 7, 2026
[data grid] Support internal validation for pasted and undo/redo values Open

feature: Editing recipe scope: data grid type: enhancement

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

mui/mui-x#23099 · 1 comment · Opened Jul 7, 2026
[pickers] keepOpenDuringFieldFocus prevents the picker from closing on date selection (closes then instantly reopens) Open

scope: pickers type: regression

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

mui/mui-x#23089 · 7 comments · Opened Jul 6, 2026
[data grid] Pagination type does not update on when props change Open

feature: Pagination scope: data grid type: bug

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

mui/mui-x#23061 · 1 comment · Opened Jul 5, 2026
[charts-premium] Reorganize map docs Open

docs plan: Premium scope: charts

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

mui/mui-x#23032 · 2 comments · Opened Jul 1, 2026
[charts-pro] LTTB sampling recomputes the value array on every zoom Open

scope: charts type: enhancement

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

mui/mui-x#23028 · Opened Jul 1, 2026
[scheduler] Multi-assignment UI: resource avatars (design-first follow-up) Open

design on hold scope: scheduler type: new feature

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

mui/mui-x#23018 · Opened Jun 30, 2026
[charts-pro] Sampled band highlight falls back to single-band width for Date/object values Open

scope: charts type: bug

Difficulty 3/5 1-2 days Newbie friendliness 67/100

mui/mui-x#22999 · 1 comment · Opened Jun 29, 2026
[charts-pro] Sampled bar bucket takes value/sign/color/mask from its first index only Open

scope: charts type: bug

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

mui/mui-x#22998 · Opened Jun 29, 2026
[charts-pro] Use subsampling for the line/bar preview Open

plan: Pro scope: charts type: enhancement

Difficulty 3/5 1-2 days Newbie friendliness 62/100

mui/mui-x#22992 · Opened Jun 29, 2026
[charts] Add MapPointPlot for rendering point features on maps Open

scope: charts type: new feature

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

mui/mui-x#22991 · 1 comment · Opened Jun 29, 2026
[data grid] Row selection highlight overrides cell selection Open

feature: Selection scope: data grid type: bug

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

mui/mui-x#22968 · 2 comments · Opened Jun 26, 2026

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