@HarryHUK yes correct Share quotas are not enforced in Rockstor at present. I’ve had warnings showing shares are about 500% usage when I’d not bothered to set a proper share size and left it at 1GB or something like that, but it means nothing apart from an annoying alert in the GUI. As long as you know you have enough space in the pool all is good.
However I don’t remember experiencing errors when resizing shares like you mention. Assuming the share is not in the root pool?
I was able to try this as best I could earlier this morning, but was unable to replicate the issues.
Quotas switched between enabled and disabled without issue (note it does take a few seconds and refreshes before this is reflected in the Dashboard widget re share usage dropping to zero when quota=disabled).
Was also able to increase and decrease Share size without error.
I was also running some random rsync data copy at the same time to replicate data activity (I dont use Syncthing).
So, unfortunately I cannot add anything to explain this I’m afraid.
I think you may have hit the nail on the head about patience