# Fixed vulnerabilities:
- Fixed a string format vulnerability introduced in 3.20.0-rc1 when listing directories using SFTP.
# New features:
- SFTP: Added support for AES-GCM ciphers as implemented in OpenSSH.
- OS X: Ctrl+Tab and Ctrl+Shift+Tab can now be used to switch forward and backward between opened tabs.
# Bugfixes and minor changes:
- Reduced time between TCP keepalive packets to 15 minutes on supporting platforms
- Fixed saving of directory listing filters with an attribute condition.