Other extensions by this user

Summary

• The new slider is showing extensions multiple times
• The extensions are changing on sliding

Steps to reproduce

• Open https://extensions.typo3.org/extension/mask
• Scroll to "Other extensions by this user" -> You see "FAL cleaner" in Box 2 and Box 3
• Click to the arrow so slide 1 Box to the right -> Box 3 is changing to "Returnmail..."