Since the new "Comment using Twitter & Facebook" feature was implemented, I've noticed an annoying bug on my blog and those of others I visit and comment on frequently. The comment box no longer has a scroll-bar on the right-hand side. If you write a very long comment - one larger than fits in the box - at first the comment box will start to expand in size - and then it just gives up and only shows part of your comment. But without a scroll bar it's painfully difficult to scroll through the comment and review what you've written before it posts.
Additionally... after you've written something and posted it - or even if you don't post it - it stays in the comment box. I can leave a page and come back and what I've written is still in the comment box. That may not be a problem - it could even be a feature... but for it to stay after I've clicked the post comment button is rather confusing.
But it's particularly annoying to be missing the right-hand scroll bar.
The blog I need help with is undiscoveredauthor.wordpress.com.