Nothing I've noticed so far is all that major, but I'm seeing a couple of glitches. FWIW I'm using Chrome Version 24.0.1312.52 m and Firefox 18.0.1
* As noted above, quote tags aren't working, at least not consistently. In Firefox, clicking the quote bubble provides a neat indented quote box in the composition window. But doing so in Chrome only indents the selected content (or the cursor) and positions it under the word "Quote" but without any actual quote box showing up while composing the post. In both cases, the quote boxes display property when previewing and after posting, so it doesn't really affect functionality. But it's bound to be confusing for some Chrome users.
* The links to individual posts (in the upper-right corner of each post's box) seem to work fine, but in Chrome they're now accompanied by a broken image link, which I assume is an icon or button. No such issue in Firefox.
