The first time I played the demo, there were NO blue boxes where ore nodules were, and while I'm playing this on a 2560x1440 monitor, those tiny ore lumps just can't be seen. Well, I started a new game, and this time the blue boxes were there, and it sure made for A LOT more pleasant playing! But all of a sudden after returning to the base and heading out again, the blue boxes disappeared ! I can't play this game with the blue boxes missing, it's just too difficult to see those ore nodules!
Is there anything that can be done to make sure those boxes show up? Or, is this a bug ?

I should mention that I'm currently playing the Demo. I would like to purchase, but I won't if this bug is present in the Non-demo version.

Mmh... is at least one Geologist on board, healthy and is your ship computer online? As long as those three prerequisites are fullfilled, the boxes should show up just fine.

You can check in the Geologist's tab whether you accidentally unchecked all ores for marking ore something like that - but I could not imagine how that would have happened.

FWIW: Just loaded a game quickly, in case the latest patch broke anything, but they do show up normally for me.