The bug is that somehow this version is doing this math, total disk space minus the reserve is being compared has the free disk space with minimum disk space
Meaning that the config for allowing small drives to be a node (less than 500GB) is now being used for free disk space reporting.
if you change in the config or in the settings the minimum disk space to 1GB it will work if you have at least 1GB free on the node.
i.e. config.yaml
storage2.monitor.minimum-disk-space: 1 GB