ARAM Howling Abyss True Vision Bug

Not sure WHAT factors went into it, but.

I'll link the relevant game here, too: http://matchhistory.euw.leagueoflegends.com/en/#match-details/EUW1/2842534154/223547100?tab=overview

I even recorded a YouTube video: https://www.youtube.com/watch?v=UjnPjxlEAEc

What happened is this:

Playing ARAM Mode. Olaf bought a Elixir of Truesight, but it expired. At around 14:30 into the match, I have placed three traps, all of which are armed and invisible.

Despite none on the enemy team having any item or buff that provides visibility, they then attack the invisible mines to dispose of them. I checked this on the video at 0:17, verifying that all enemy team members have no truevision buff active on them. Afterwards, I confirm at 0:31 again that none of the four enemies engaged in the fight have a truevision buff active on them. DESPITE THAT, at 0:38 Lucian once again attacks one of my (invisible) traps: one of the older ones that has definitely been armed in that time.

I'm sure a Rioter can check the match for the specific data if they like, but either there is a bug that doesn't properly show the true vision buff as being active (in which case it's still a bug), or it's giving you true vision under circumstances where you should not have it.

My theory is that Olaf's expired true vision elixir somehow caused some sort of weird interaction, as throughout the game I saw specifically Olaf always clearing my bombs, though if he wasn't around his allies would (sometimes) step into the bombs.

Having to play Teemo was annoying enough, having the enemy just disregard my ult completely was frustration extreme.