Summoner's Rift BETA Map textures not loading

Sorry for the lack of a screenshot, I'm a newb and didn't know how so I just snapped a photo with my phone. If it matters, this was during an intermediate bot match on blue side top lane with the tower that gives a shield. It also seems I was the only player who could see the glitch.

Just wanted to share this. I know the pic quality is bad but I suppose it gets the point across.