I was in Bal Foyen last night, saw a node and when I went to farm it, another player got there and picked it up. My interaction button became grey and I couldn't pick it up. I chalked it up to me getting there behind the other player, so I moved on to the next node, just a couple steps way. That was when things began to get weird.
I was clearly alone at the second note - the other player was still picking up the first node - but my interaction button was still greyed out. I thought that it might had been lag or desynch, so I tried to get away from the other player.
I got to a place where I couldn't see them, there were 3 nodes very close together but yet, I could not interact with them. I rolled dodged, it didn't work so I reloaded UI. When I loaded back in the nodes were gone (no surprise) and the other player was nearby. My interaction button was still grey and for a few seconds I couldn't use it. I tried using it on some containers, interaction still grey and then, all of a sudden, I was able to interact with objects again.
Was that just lag/desynch/what-have-you or was it something else?