Creating forum discussions may redirect to wrong forum

Here's what I did,

I opened in tabs the three forums that appear on the Features Demo on http://qa.moodle.net/,
here's the tab order

1. A standard .......
2. Each person ......
3. A single dis.....

When I was adding a new discussion in forum 1, after saving it and clicking the continue button I got redirected to forum 3,

then I opened in this order

1. single
2. Standard
3. 1 discuss

Added a new topic on 2 and got redirected to 3, when back on the browsers history added a new one again and got sent again to forum 3,
without closing the tabs, I wen to forum 1 and replied a comment, when back on my browsers history on tab 2 for forum 2, clicked add new discussion, after saving I got sent to forum 1,