[svelte 5] Select component deselects item when clicking on the item again

[sharknoon]

Describe the bug

In a Select component dropdown, when clicking on an already selected item (which has the checkmark next to the text), it deselects it. In the react shadcn/ui as well as in the Svelte 4 version, you can't deselect an already selected item by clicking again on it.

Reproduction

Expected behavior

React version

https://ui.shadcn.com/docs/components/select

1. Select "Apple" from the dropdown
2. Select "Apple" from the dropdown again (it is still selected)

   Svelte 4 version

   https://www.shadcn-svelte.com/docs/components/select

3. Select "Apple" from the dropdown
4. Select "Apple" from the dropdown again (it is still selected)

   Wrong behavior

   Svelte 5 version

   https://next.shadcn-svelte.com/docs/components/select

5. Select "Apple" from the dropdown
6. Select "Apple" from the dropdown again (it gets unselected)

Logs

No logs because it is not an error which is thrown. See reproduction above.

System Info

System:
    OS: Windows 11 10.0.22631
    CPU: (24) x64 AMD Ryzen Threadripper 2920X 12-Core Processor 
    Memory: 12.56 GB / 31.88 GB
  Binaries:
    Node: 22.2.0 - C:\Program Files\nodejs\node.EXE
    Yarn: 1.22.22 - C:\Program Files\nodejs\yarn.CMD
    npm: 10.9.0 - C:\Program Files\nodejs\npm.CMD
    pnpm: 9.12.2 - C:\Program Files\nodejs\pnpm.CMD
    bun: 1.1.30 - ~\.bun\bin\bun.EXE
  Browsers:
    Edge: Chromium (123.0.2420.97)
    Internet Explorer: 11.0.22621.3527

Severity

annoyance

[huntabyte]

This is by design at the request of people who want to give users the ability to deselect items and set the select's value to the default.

I'll add a prop to bits-ui to enable you to disable this functionality though! https://github.com/huntabyte/bits-ui/issues/818

[huntabyte]

Closed as added in bits-ui@next.29 via the allowDeselect prop on the Select.Root component 😃

[sharknoon]

What a quick response! Thank you so much @huntabyte! :)