I found an odd bug on the CodePlex website. I was looking at the Issues page for the BlogEngine.NET project. The paging links at the bottom gave an option to Show "All" Items. When I clicked the link to show all, it did show all the items, but the page rendered extremely wide. It was too wide for my monitor! Even worse, the Configure View form was completely broken and the paging links were missing. For some projects (which have hundreds of issues), the layout breaks if you want to see all the issues at once. And it doesn't give you a UI option to change it back! Here's what the web page looked like for me. Notice that the page was so wide, it took two screenshots: one to show the left side of the page and one to show the right side of the page.

By looking at other projects that didn't have the broken layout issue, I discovered a workaround. Basically, you have to manually issue a command to tell the website to show fewer issues per page. In your browser's address bar, enter this text and hit ENTER.
javascript:__doPostBack( 'ctl00$ctl00$Content$TabContentPanel$Content$PageSizeControl','10')
After the screen reloaded, all was back to normal:

The Discussions page didn't have this same bug, but if it does, this javascript should fix it:
javascript:__doPostBack( 'ctl00$ctl00$Content$TabContentPanel$Content$PageSizeControlBottom','10')
The status of this bug can be seen in the CodePlex Issue Tracker. I don't think it will stay broken for long, but if you run into the same bug, here is a workaround. Have fun with the open source!