Feature! Can be disabled in Admin --> Forum settings --> User area --> accessible by registered users only.

Excellent, thanks. But there's another bug on the Forum settings page. Under Editing postings I tried to change the time for:

[] if a posting gets replies it can be edited only within [] minutes

But every time I click on the minutes box the checkbox is toggled, which means it is impossible to write anything in that box. I tried a number of times, but it is impossible to get the cursor to stick in the box.

Per Bylund