Since some time dynmap shows the number of players who are online. I wish for a possibility to decrease this number if i vanish.

If no Player is online playerlist looks like this:
--- Players ---

If Players are online like this:
--- Players [4/10] ---
Player1
Player2
Player3
Player4

If one of these players (for example player3) is vanished:
--- Players [4/10] ---
Player1
Player2
Player4

If you're hidden from view on dynmap (using the vanishnopacket hook) and you don't decrease the displayed count that's a dynmap issue (or feature decision). Nothing I can change, as far as I know.

Search now at dynmap-tickets for this problem and found this: webbukkit/dynmap#1252
Looks like it's an bukkit-APIs fault. I will search later how to create ticket for it.

Thx for quick help.