I found some interesting discussion about this on (I think) HN. Apparently this is indicative that the connection and sharing of video/audio feed happens before the recipient accepts. I get the point of this - it takes some time to establish that connection, and they don't want users to have to wait those 1-2 seconds after clicking "accept". However, it really should just be worth that small connection time to completely shut off the chance of any more exploits of this caliber.
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