Upgrading content management systems (CMS) such as Joomla! brings many benefits, including improved security, new features, and enhanced performance. However, upgrading to a newer version of Joomla! may result in issues with incorrect layout display on websites. This article focuses on the causes and solutions to this common problem.

Causes of Incorrect Layout Display

1. Outdated Templates and Extensions: Many templates and extensions are not immediately updated after the release of a new Joomla! version, which can lead to conflicts and incorrect layout display.

2. Changes in CSS and JavaScript: A new Joomla! version may introduce changes in core CSS and JavaScript files that can disrupt the appearance and functionality of websites.

3. Outdated Code: Older template or extension versions may contain outdated code that is not compatible with the new Joomla! version.

4. Conflicts Between Extensions: Upgrades may reveal hidden conflicts between extensions that were not apparent before.

Resolving the Issues

1. Update All Templates and Extensions: Before upgrading Joomla!, it's essential to check for updates to all used templates and extensions and install them.

2. Use Browser Developer Tools: To identify CSS and JavaScript issues, you can utilize developer tools in your web browser. These tools allow you to quickly find and fix problems.

3. Check Compatibility: Before upgrading, ensure that your templates and extensions are compatible with the new Joomla! version. Information on compatibility is usually available on the websites of template and extension developers.

4. Test on a Website Clone: Before performing the upgrade on your live website, it's advisable to test the upgrade on a clone of your website. This allows you to identify and address any issues without risking the functionality of your main website.

5. Roll Back to the Previous Version: If you're unable to resolve the issues, temporarily rolling back to the previous Joomla! version may be a solution until the issues are addressed.

Incorrect layout display after upgrading Joomla! can be frustrating, but it's usually issues that can be identified and fixed. The key to a successful upgrade is careful preparation, testing, and keeping templates and extensions up to date. With these steps, you can minimize the risks associated with upgrades and ensure that your website remains functional and visually appealing.