There is nothing wrong with the front of the vanes in the biscuit. It won't effect accuracy or reliability of the rest one bit.
I saw a brand new Hoyt Tec bow blown up a couple of years ago because the vanes were sticking through the WB at brace height. The guy drew, apparently the bristles had a nice, snug grip on the vanes. The nock pulled out of his carbon arrow. He didn't notice the arrow was dangling down from the biskit and only the nock was on his string. I yelled "LET DOWN" at the exact moment he triggered the release.
Kablooie![:'(]
I would NOT recommend that kind of setup. No dig against the WB, but there is no sense in taking that kind of risk. Shorter vanes (Bohning Blazers, for instance) or a different rest. Those are the options I'd look at, if it were my bow.