"Scan my library periodically" not work

[thenextbutton]

Hey @DKUSER

There is another thread about this here:

SHIELD Plex Media Server suddenly stops searching for content automatically

since a few days the plex media server no longer searches automatically for new content. i have to rescan the individual media libraries via the plex web app. Is this a known bug, has there been an update or do I simply have to change something?