My bookmark tabs look like this now:

They used to be slimmer. I'm not sure if this is a bug or not, but if it's an intentional change I can't say I like how it looks.
Mine did the same thing. I made them smaller with CSS, but it's not the same. I hope they can figure it out, but I honestly think they're not really looking to fix it, the site has got enough bigger problems than that.
what code are you using?
.bookmark {margin-bottom:5px !important; Height: 50px; width: 10px;
padding-top: px !important;}
.bookmark a { font-size: 13px; }
Thanks. The text on the tabs was messed up, but I just had to remove the "height" part so they adjust to the text size.