Foresight been using stable release of Gimp until 2.7.1 released. 2.7.0 was too unstable to update to.
Now users can easily use the “Single-Window mode” of gimp, it will make all windows in Gimp to be one. Looks more like photoshop.
If you are in fl:2-qa or fl:2-devel labels of your Foresight, you can change it in gimp under: Window > Single-Window Mode