@Alex_Powell Welcome to the Rockstor community.
So this is an odd one, we’ve had not reports of this kind for a while now. Could you open a GitHub issue for this with the given details. And if your could link back to this forum thread also in case progress is made here first. Also could you indicate the Rockstor version you are running, ie via:
yum info rockstor
As there have been a number of fixes released for the Dashboard both in testing and then later in Stable channel updates. See the following intro section for our current stable / testing release history:
Thanks.