primefaces / primefaces/primereact

DataTable: Frozen column alignment right is broken

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Status: Needs Triage
Dominant language
CSS
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Description

Describe the bug

When using frozen columns with right alignment in DataTable, the column alignment does not work properly. The content is positioned above the treetable

Image
Reproducer

https://stackblitz.com/edit/vitejs-vite-khxusvfd

System Information
System:
    OS: macOS 15.6.1
    CPU: (10) arm64 Apple M1 Max
    Memory: 1.25 GB / 64.00 GB
    Shell: 5.9 - /bin/zsh
  Binaries:
    Node: 22.14.0 - ~/.nvm/versions/node/v22.14.0/bin/node
    Yarn: 1.22.18 - /opt/homebrew/bin/yarn
    npm: 11.4.2 - ~/.nvm/versions/node/v22.14.0/bin/npm
    pnpm: 10.11.0 - ~/Library/pnpm/pnpm
    bun: 1.2.17 - /opt/homebrew/bin/bun
  Browsers:
    Chrome: 139.0.7258.155
    Safari: 18.6
  npmPackages:
    primereact: ^10.0.0 => 10.9.7
    react: ^18.2.0 => 18.3.1
Steps to reproduce the behavior

No response

Expected behavior

The expected should be aligned to the right, not above the table

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 with the linked StackBlitz reproducer and the DataTable implementation for frozen columns and right-aligned content. Compare the rendered position with the expected alignment, then verify the fix against the reproducer in the supported PrimeReact setup. Done means right-aligned frozen-column content stays within the table instead of appearing above it.

Written by the indexing model from the issue text.

Assessment

Tech stack
css, react
Domain
frontend
Issue type
Bug
Difficulty
3/5
Estimated time
1-2 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
45/100

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