"Unlimited" Admin storage quota seems to be limited to 10GB

Nextcloud 16.0.4 installed on VBox 200GB Virtual Hard Drive Ubuntu 18.04 Virtual Server.

As Admin, I set my own quota as “Unlimited” but in Settings it appears I am running out of storage, seems to be 10GB implied.

Is this just a rendering issue, do I actually have no limit? Or is there perhaps a PHP setting somewhere that is artificially limiting my storage to a fixed value? Thanks