Similar here.
Chrome seems OK-ish (it still opens new tabs where it should be opening content in the same tab).
Safari also seems OK-ish (it still opens new tabs where it should be opening content in the same tab).
Firefox viewing my own profile opens blank tabs instead of content.
Firefox viewing someone else's profile tries to display content but stalls out trying to load some element(s), resulting in a blank brown page (it's been spinning for several minutes now....)
By clearing caches, I was able to Firefox to display my profile page and get most of it to work. However, I do not care for the fact that there is now no separation between the bars in my bar graphs and the tables do not have grid lines anymore. Makes it much tougher to view and read data.
For folks having the issue with the FindStatGen tables missing grid lines.. I figured out what is causing this. The new profile page is loading a stylesheet called normalize.css, which has a default rule that collapses spaces between table cells. I was able to get my grid lines back by adding the following to the top of my profile:
<style type="text/css">
table { border-collapse: separate; border-spacing: 1px; }
</style>
You can experiment with the border-spacing value to see what gives the best result.
Everything now seems to work fine with Chrome, but with Firefox, the iframe is not resizing for me, and I can't click on any tabs or inline content within the FindStatGen section. Not sure what the issue is there. [update -- I tried with a completely fresh install of Firefox, and it worked fine. So apparently, something in either my settings or extensions is messing it up. Will continue to experiment with it.]
Paul