Azir wall passthrough bug

I have been playing Azir since launch but I have noticed a bug that has not yet been patched

This is where you use Emperor's Divide (R) and has no affect on the enemy. The wall simply passes through them without pushing them back. This has caused me to die unilaterally on several occasions as well as loosing me a ranked game.

(The enemies are not using a self rooting ability such as xerath ulti)

unfortunately I don't have any evidence or recordings of this.

Just wanted to make Riot aware of this if they were not already and was wondering if anyone else has had a similar problem.