Status of Image Backup for Linux Client


it is not clear to me, if the Linux Client supports Image backups.
Both on the commandline and also in the WebUI it seems to be supported in the settings.
But here in the forums, I find only negative comments. Furthermore in the ‘overview’ section of the Web-Interface it says that image-backups are not supported.

The Manual does not seem to answer.
What’s the status on this now?