Like the "Post" and "Load All Comments" buttons show up as light green text on the teal background for me, making them almost invisible. They only turn grey when I hover over them.
The tab behind the "Comments Filter" is probably 20 px higher than it should be, so the bottom edge of it is half-way through the "All" text.
Same, and weird.
The comments are now too far to the left edge, which is distracting.
You're just used to too much white space on other websites.