Thanks for the report, but nothing will be done to fix this.
This is because the CSS tells browser to display the font at a certain size which IE cannot over ride it. You will get the same problem on Mbpost.com, Mountain Project, Joomla.org, and many others. We would have to compromise everyone's font size to make this work.
Regarding point 2, that makes sense considering that your zooming in. Do yourself a favor and get a browser like Google Chrome or Firefox. They are much better! You will not encounter problems like these, they rarely ever crash (in comparison to IE), and the just straight out work better. You can easily import your bookmarks to. I know I sound like an advertiser, but I can't stress enough the importance of a good browser. It will make your life (using the internet) better, and the less folks who use old out dated browsers, the less head ache mess for us.