I have been having an issue in the newest build where the window that the graphic is in will not come into focus. What I mean by this is that the tool panels are always on top of graphics window. This makes it hard to work on graphics in larger windows. I have tried deleting the install of portable gimp and downloading it again and still get this issue. Is there a setting that would cause this behavior?
The same issue exists for me. As well, several of the graphical tools, like the burn/dodge tool, and other, lose their focus and the active area of the tool separates from the pointer!
The more you know, the more you know you don't know.
There is a option under preferences that toggles this on and off.