they were low like right on the water
I think drones will not fly under a certain elevation after forming up, unless about to land.... perhaps they are the culprit?... If so, then the question is, working as intended, or not?...
Also, this could be a radar issue, I tried mowing weeds in my Dora last night (a couple K above sea level, but dodging the tree tops in high terrain), and either there were a couple extremely observant players in the region, or now that I think about it, might of been dar.