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[autocomplete] Fix ArrowLeft, Backspace & Delete behavior for multiple and single-value rendering with proper caret handling #47411

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[autocomplete] Fix ArrowLeft, Backspace & Delete behavior for multiple and single-value rendering with proper caret handling #47411

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@jnbain jnbain commented Dec 3, 2025 •
edited by ZeeshanTamboli
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Fixes #47241

Checklist

  • The branch is targeted at master
  • I have tested the changes locally
  • The code follows the project's coding style (prettier applied)
  • Tests added/updated (guidance needed - this is my first PR to Material-UI)

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jnbain added 3 commits December 2, 2025 17:14
@jnbain
[Autocomplete] Fix ArrowLeft behavior in multiple mode with input text
a0239d1 
- Only select chip/value when cursor is at start of input (position 0)
- Makes multiple mode consistent with single mode behavior
- Fixes mui#47241
@jnbain
Resolve merge conflict - keep cursor position check fix
a800fcf
@jnbain
Merge upstream/master and apply prettier formatting
1be6bb9
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mui-bot commented Dec 3, 2025 •
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@mui/material 🔺+199B(+0.04%) 🔺+57B(+0.04%)
@mui/lab 0B(0.00%) 0B(0.00%)
@mui/system 0B(0.00%) 0B(0.00%)
@mui/utils 0B(0.00%) 0B(0.00%)

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mj12albert commented Dec 3, 2025 

Single mode: Pressing ArrowLeft selects the value even when the input field contains text
Multiple mode: Pressing ArrowLeft does nothing when the input field contains text

TBH I don't really understand this, do you press ArrowLeft when the input is already focused? Would appreciate a screen recording if possible

@zannager zannager added the scope: autocomplete Changes related to the autocomplete. This includes ComboBox. label Dec 3, 2025
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ZeeshanTamboli commented Dec 4, 2025 •
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Single mode: Pressing ArrowLeft selects the value even when the input field contains text
Multiple mode: Pressing ArrowLeft does nothing when the input field contains text

TBH I don't really understand this, do you press ArrowLeft when the input is already focused? Would appreciate a screen recording if possible

@mj12albert Yes, it happens when the input is focused. By “value,” the author meant the selected value Chip. The behavior in the fix matches Base UI Combobox: https://base-ui.com/react/components/combobox#multiple-select (which I suppose is ARIA compliant).

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ZeeshanTamboli reviewed Dec 4, 2025
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@jnbain Thanks for the PR. Some existing tests are failing that can be checked in CI.

@ZeeshanTamboli ZeeshanTamboli added the type: enhancement It’s an improvement, but we can’t make up our mind whether it's a bug fix or a new feature. label Dec 4, 2025
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mj12albert commented Dec 4, 2025

I think the change is fine, though I don't think this behavior is specified in ARIA

Single mode: Pressing ArrowLeft selects the value even when the input field contains text

The issue is this, assuming it's referring to https://mui.com/material-ui/react-autocomplete/#single-value-rendering

The behavior seems buggy as you can't move the caret through the whole text, it just jumps from the end to the chip

So I suppose it's not that the behaviors are inconsistent between single/multiple but they each have their individual bugs

@ZeeshanTamboli ZeeshanTamboli changed the title [material-ui][Autocomplete] Fix ArrowLeft behavior in multiple mode with input text [autocomplete] Fix ArrowLeft behavior in multiple mode with input text Dec 4, 2025
@ZeeshanTamboli ZeeshanTamboli changed the title [autocomplete] Fix ArrowLeft behavior in multiple mode with input text [autocomplete] Fix <kbd>ArrowLeft</kbd> behavior in multiple mode with input text Dec 4, 2025
@ZeeshanTamboli ZeeshanTamboli changed the title [autocomplete] Fix <kbd>ArrowLeft</kbd> behavior in multiple mode with input text [autocomplete] Fix ArrowLeft behavior in multiple mode with input text Dec 4, 2025
@ZeeshanTamboli ZeeshanTamboli changed the title [autocomplete] Fix ArrowLeft behavior in multiple mode with input text [autocomplete] Fix ArrowLeft behavior in multiple and single value rendering mode with input text Dec 5, 2025
@ZeeshanTamboli ZeeshanTamboli changed the title [autocomplete] Fix ArrowLeft behavior in multiple and single value rendering mode with input text [autocomplete] Fix ArrowLeft, Backspace and Delete behavior in multiple and single value rendering mode with input text Dec 5, 2025
@ZeeshanTamboli ZeeshanTamboli added type: bug It doesn't behave as expected. and removed type: enhancement It’s an improvement, but we can’t make up our mind whether it's a bug fix or a new feature. labels Dec 6, 2025
@ZeeshanTamboli ZeeshanTamboli changed the title [autocomplete] Fix ArrowLeft, Backspace and Delete behavior in multiple and single value rendering mode with input text [autocomplete] Fix ArrowLeft, Backspace & Delete behavior for multiple and single-value rendering with proper caret handling Dec 8, 2025
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ZeeshanTamboli commented Dec 8, 2025

@jnbain Made the expected changes, including fixes for Backspace and Delete. I have also added tests. @mj12albert would you mind reviewing?

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scope: autocomplete Changes related to the autocomplete. This includes ComboBox. type: bug It doesn't behave as expected.

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[autocomplete] Inconsistent behavior between single and multiple rendered values

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