primefaces / primefaces/primereact

ListBox: The options list is being scrolled unexpectedly

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Status: Needs Triage
Dominant language
CSS
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Description

Describe the bug

When you select some option, and then use the mouse wheel to scroll down or up, and then select another option, the list is being scrolled unexpectedly. Sometimes the clicked option is not selected at all (see option "Name 21" in the GIF below).

Image

Image
Reproducer

https://stackblitz.com/edit/tfiy9yla?file=src%2FApp.jsx

System Information
System:
    OS: Windows 11 10.0.26100
    CPU: (8) x64 11th Gen Intel(R) Core(TM) i5-1135G7 @ 2.40GHz
    Memory: 3.08 GB / 23.70 GB
  Binaries:
    Node: 20.11.0 - C:\Program Files\nodejs\node.EXE
    npm: 10.2.4 - C:\Program Files\nodejs\npm.CMD
    bun: 1.2.18 - ~\.bun\bin\bun.EXE
  Browsers:
    Edge: Chromium (139.0.3405.111)
    Internet Explorer: 11.0.26100.1882
  npmPackages:
    primereact: ^10.9.7 => 10.9.7
    react: 19.1.0 => 19.1.0
Steps to reproduce the behavior
  1. Go to https://stackblitz.com/edit/tfiy9yla?file=src%2FApp.jsx
  2. Select some option
  3. Scroll the list and try to select another option immediately
Expected behavior
  1. The list stays in the position the user scrolled to.
  2. When the user selects a new option, it's not scrolling anywhere, but selects the option, and stays in the current scroll position.

Contributor guide

Open the contributing guide

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start by running the StackBlitz reproducer at src/App.jsx and follow the ListBox interaction after selecting, scrolling, and immediately selecting another option. Confirm that the list keeps its scroll position and that the clicked option is selected; verify the behavior in the reported Windows and React 19 environment.

Written by the indexing model from the issue text.

Assessment

Tech stack
react
Domain
frontend
Issue type
Bug
Difficulty
3/5
Estimated time
1-2 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
35/100

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