I've just installed WP 2.8.6 on a new domain I got last night. Earlier I have been running 2.8.4.
In 2.8.4 I had no problems adding, removing or adjusting the placement of widgets - however in 2.8.6 I cannot do this anymore. When I hover the mouse over the title bar of a widget, click and drag, it's only making a selection of the text - I cannot drag the widget over to wherever it should go.
First I thought it was probably a Safari issue (most super custom made stuff won't work in Safari, like Joomla for instance..) so I tried Firefox, only to find the same result - click and drag results in marked text and elements, not moving the widgets around.
I'm on a Mac, but that shouldn't make any difference.. ?
I noticed there's a new box or description in the widgets page. It says
Drag widgets from here to a sidebar on the right to activate them. Drag widgets back here to deactivate them and delete their settings.
Now, I don't see anything to the right.........