Enemy nexus auto-path bug!

I joined a game in which wherever I click on the mini map my champion would auto path to the enemy nexus.

After googling the issue I found the only solution was the disconnect and reconnect, I did so and the game worked perfectly afterwards.

However I was disappointed to find that after the match had finished I was issued a 5 match 'LeaverBuster' wait of 10 minutes each queue!

Please fix this Riot.