i had this problem, at first with an ancient SOS you know this is really hard to get... well this is the problem, i went to the correct place to find the chest.. i didnt notice i was full of items in my backpack, and i used my pole at the place to find the treasure, but errrr..... a problem... " you have no room for that fish" damn! i lost my ancient sos, it dissapeared... i lost the leviathan fable net.... no white treasure spawn.... so what happened... i continued fishing at the place but nothing... 
anyway it happened again with a normal waterstained SOS.... it dissapeared when i had no room to handle the treasure... and the treasure didnt spawn as it used to in the past.. i remeber it used to spawn in the ground (of the ship of course).... i hope somebody fix this problem...
anyway it happened again with a normal waterstained SOS.... it dissapeared when i had no room to handle the treasure... and the treasure didnt spawn as it used to in the past.. i remeber it used to spawn in the ground (of the ship of course).... i hope somebody fix this problem...
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