Duplicated renderings might be shown in the Select a Rendering dialog in Experience Editor after applying some previously available hotfixes.
To resolve the issue, consider the following options:
- Upgrade your solution to Sitecore XP 10.4.0 or later.
- For Sitecore 10.3, download and install the corresponding cumulative hotfix available in the updated KB1002844.
- For Sitecore 10.2, download and install the corresponding cumulative hotfix available in the updated KB1001439.
- For Sitecore 10.1, download and install the corresponding cumulative hotfix available in the updated KB1001300.