It's a bug. It'll be fixed soon. In the interim, use a site like Hellhades or Ayumilove to look them up. You can sort by arena rankings, and most champs you see will be in the top 50 of those lists.

Ive heard others talking about how we used to be able to pull up char bios in arena musta been before i joined. Anyway im curious did it just show the char stats or the gear skills too 

Shows all the information in the index, just a way to tell you what their skills do.

Doesn't give any information on how the player has the champion built.

That's more than a bug. Arena is already a job but now we'll have to go to another site and search........

why use a third prty site? just go to the champion index

Yeah I only suggested the sites as a way of narrowing the list down, since otherwise it could be overwhelming trying to find the specific champ they see the picture of.

Because you can't alt tab to the index :)

so I guess it isn't a bug 

it was a good tool to help set your team quickly and time is money

Just noticed this too, if you try it in tag arena then the team power disappears sure that isn't suppose to happen 

so today I ran into a champion I'd never seen before and of course she had the ability to switch HP with my guys, had no clue and got smoked. real nice going into fights blind and I guess the mods don't care to bring this up because the arena is already SO fair. 

Trips that does work I'll stop whining just a couple more keystrokes

I'm not sure what the problem is. If I select a fight, I can go straight from the matchup page to the index for both my own and the enemy team.