Textarea auto-resize triggers scroll jumps

[theofidry]

Describe the bug

When editing a text area, based on the content, it may trigger a scroll jump even if the textarea size did not change.

Pull Request Link

No response

Reason for not contributing a PR

• Lack of time
• Unsure how to implement the fix/feature
• Difficulty understanding the codebase
• Other

Other Reason

No response

Reproducer

https://stackblitz.com/edit/imjgwiqc?file=src%2Fapp%2Finput-textarea-auto-resize-demo.html

Environment

macOS 14.6.1 (23G93)

Angular version

19.0.7

PrimeNG version

v19

Node version

v22

Browser(s)

Chrome 131.0.6778.265 (Official Build) (arm64); Firefox 134.0 (aarch64)

Steps to reproduce the behavior

• scroll down the text area
• start editing a line (the change can result in an additional line being added or not, it happens in both cases)
• the window jumps back to the top

Expected behavior

I do not expect the window to jump back to the top but rather stay in place.

[github-actions]

Due to PrimeTek's demanding roadmap for PrimeNG, this issue is available for anyone to work on. Make sure to reference this issue in your pull request. ✨ Thank you for your contribution! ✨