[fixed/closed]EDH bad mulligan

[Nexhro]

Describe the Bug:
Looks like the way EDH mulligans work has changed with the latest bugfix.

The first mulligan a player takes in a game of EDH makes him/her draw a card for each card he/she chose and temporarily exiled.
So if a player chose 7 cards from his/her starting hand, he/she will draw 7 new ones. It should be 6 new cards drawn in that case.

Which card did behave improperly ?
EDH mulligans

Which update are you using?(date,name)Which type(Duel,Gauntlet,Sealed Deck)
CoRM15 mini2, duel

What exactly should be the correct behavior/interaction ?

903.8. The Commander variant uses an alternate mulligan rule. Each time a player takes a mulligan, rather than shuffling his or her entire hand of cards into his or her library, that player exiles any number of cards from his or her hand face down. Then the player draws a number of cards equal to one less than the number of cards he or she exiled this way. That player may look at all cards exiled this way while taking mulligans. Once a player keeps an opening hand, that player shuffles all cards he or she exiled this way into his or her library.

Are any other cards possibly affected by this bug ?
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[Gargaroz]

Here's another rule I completely misread
Fixed in 20fba32

[Nexhro]

This is fixed as of CoRM15 mini4.