Using Win XP x64 and revision 1889 from SVN.
The start page gets corrupted if file is opened from Explorer.
1. Open C::B.
2. Make sure that the Start page is open.
3. Minimize C::B using the taskbar button, not the minimize button at the top.
4. Create new file in the Explorer (e.g. file.cc).
5. Double click the file and the file is opened in C::B.
6. Switch to the Start Page, it's corrupted.
What's interesting is, that this is second or third bug(?) which only happens with minimizing C::B with the taskbar button. So what's different between minimizing C::B with the minimize button vs. the taskbar button.
Here's an image of the problem: