Watching Masters VOD's. Ik they can in league but not sure about valo
idk anything about league or how it plays but is it not a huge oversight to allow players to hear casters?? surely they get info from it no?
RIOT's communication on it is that they basically don't want to pay for booths like Valve does for DOTA.
And yes it is a known problem but it's just accepted or not talked about anymore. I think they have done booths for semi or grand finals of Worlds though