Green screen

So turned on my quest 2 and the hub area was green.  Like a filter.  All worked but green.  Hard reset fixes it.  First time. Hopefully last time.  Newish unit with little usage.  Worried it will happen again.

I have googled the issue and looked on her and there are others who have had green lines and a few green screens on go and rift.  But this was a green filter over the normal usage.

Any ideas ? Is this a sign of anything or just a software issue.

Thanks