[CLIENT] ARAM champion randomization glitch?

I have a strange possible-bug, here:

Whenever I play a series of ARAM games, the first game in the session will ALWAYS give me Warwick, unless it is a custom ARAM game. I'm not sure if this really is a bug or just a bizarre coincidence, but this has happened about five sessions in a row, now. Note that when I play more than one ARAM game in a session, I will get a different champion (usually a free one). I have not tried re-rolling when I get Warwick, since I don't want to waste a reroll (hey, I like playing Warwick.)

In terms of reproducing the bug, just go to the client and select ARAM, and hey! I'm Warwick.

This seems to happen whenever I play ARAM.

Again, I'm not sure that this is a bug, since it has to do with randomization. It may merely be a weird coincidence. If it's the latter, then good for me, because I'm really starting to get good with Warwick. :P

If anyone else who plays ARAM regularly (or semi-regularly) is getting a certain champion all the time before rerolls, please chime in.