Rek'Sai not feeling it...

I just finished a game of Rek'Sai and before that I found a strange thing that is a one piece of a tunnel (one side of it(a hole and a crack)). CANTDIY!!!mere (my generous enemy( not banned for some F-ing reason)) stepped on this tunnel in attempt to destroy it ... but nothing happened. After a respawn I decide to use my ultimate ability on this piece of art (which is actually were possible to do) and after reaching destination without any occasions I dived in and back out right on the same spot ( since there were no other piace on the other side which were not existedhmmm... ) tunnel closed and goes on cooldown but... the timer line of total existence of the tunnel was not moving which i assume meant that is not going to disappear at all. More than that the actual number of full complete tunnels on the map was four at the point but this(incomplete)piace was suppose to be fifth but wasnt count at all since tooltip of ability icon dispalyed number 4. Tunnel was solid strong and independent for a match lasting and alowed me to use it any time i had a chance (not like wimpy Darius ult after mega nerf... pfff ). Have no idea what could of coz that accident. Was not a game breaking tho...[zombie-nunu-bummed]