Hi xD
I hope the following helps. To save time, read the KEY POINTS at the bottom.
Well.. I found something in a zero-k game regarding licho's No-ammo icon...
Here is the description with story in which i was driving a mini-nuke submarine lol..
... and then I jumped into my mini-nuke Submarine and sneaked into the back of their bases. I was able to smell fresh metal back there. My teammates betrayed me and refused to scout enemy bases. And the enemy had already set a torpedo trap from north and south. I was preparing to self-d to avoid capture but then I found a terrible fault in an enemy's licho.... I as able to track its landing ignoring OUR visibility and also ignoring Licho's DOT !! After tracking its location, I nuked its repair-pad along with the troubling licho.
OK enough BS.. KEY POINTS are...
1. Enemy's Licho was OUT OF sight.
2. Enemy's Licho's DOT was also not visible. So it was truly not visible and unknown.
3. The only thing that was visible was it AMMO REFILL box.
So in simple words.. I was able to see its ammo refill icon and then i tracked it back to its base..