My realm will not save upon selecting "Save & Quit" and will not create new backups. Currently if there is only one player online and they log off, the realm resets to the previous backup. Taking the realm offline, downloading the world, playing in it offline, then saving and quitting works. The realm can then be re uploaded and it will make a new backup once, then it will not make any more once again.
Thank you for your report!
We're actually already tracking this issue at REALMS-2393, so we will resolve and link this ticket as a duplicate.
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