[CLIENT] Selecting the same champion's shards twice in a row when rerolling into random champion

I had three champion shards: 2 Sivir shards and 1 alistar shard. When I clicked on a sivir shard to reroll it, and then clicked on the sivir shard again (to use the 2nd shard as one of my 3 to reroll) nothing happened.

I could, however, select sivir first, then alistar, and then the other sivir.

STEPS TO REPRODUCE:

1. click on a champion shard that you have more than 1 of
2. choose to reroll it into a random champion permenant
3. click on the shard-icon again to use the 2nd shard
4. nothing happens (this is the bug)

I believe I've done this twice, but I don't quite remember the particulars of the first time.

Cheers