[Autocomplete] Prevents Autocomplete menu from opening on right click

[silviuaavram]

• I have followed (at least) the PR section of the contributing guide.

It's basically #36389 from @taverasady but opened this one instead because of rebase/merge issues.

Fixes #36075

[mui-bot]

Netlify deploy preview

• docs/data/material/migration/upgrade-to-v9/upgrade-to-v9.md

Bundle size report

Bundle	Parsed size	Gzip size
@mui/material	🔺+14B(0.00%)	🔺+5B(0.00%)
@mui/lab	0B(0.00%)	0B(0.00%)
@mui/system	0B(0.00%)	0B(0.00%)
@mui/utils	0B(0.00%)	0B(0.00%)

Details of bundle changes

Generated by 🚫 dangerJS against 61e718c

[Copilot]

Pull request overview

This PR prevents the Autocomplete menu from opening when the user right-clicks on the input field. It addresses issue #36075 by adding a check to ensure only left-click (button 0) triggers the popup indicator in the handleInputMouseDown handler.

Changes:

• Added event.button === 0 check to handleInputMouseDown in useAutocomplete.js to filter out non-left clicks
• Added a test case to verify right-click doesn't open the popup

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated no comments.

File	Description
packages/mui-material/src/useAutocomplete/useAutocomplete.js	Added button check to prevent right-click from opening the autocomplete popup
packages/mui-material/src/Autocomplete/Autocomplete.test.js	Added test to verify right-click behavior

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[ZeeshanTamboli]

This works well but I think the input should also be focused when right-clicking on the border of the input like in Base UI Combobox: https://base-ui.com/react/components/combobox.

[silviuaavram]

Are you sure? I right clicked everywhere, including on their border, and it's not opening. And it shouldn't.

[ZeeshanTamboli]

and it's not opening.

I mean input should be focused on right click, and not the pop-up should be opened.

[silviuaavram]

Oh I see. This is a different issue. We can fix it separately, since it doesn't seem to be a breaking change.

[ZeeshanTamboli]

Oh I see. This is a different issue. We can fix it separately, since it doesn't seem to be a breaking change.

Alright.

[ZeeshanTamboli]

Looks good to me.

[siriwatknp]

Breaking change should be added to the upgrade-to-v9 page.