Rek'sai ARAM tunnel bug

On ARAM rek'sai tunnels will occasionally glitch out to a state where they lack a time remaining bar and never time out as well as be indestructible for the rest of the game, lasting forever and unable to be destroyed by the enemy team.

I do not know how to reproduce this bug, nor do i personally have pictures of it but it has happened to me personally twice and I have found evidence that this is a known bug