Bibledit has several areas to work in.
In Menu / GoTo there are hotkeys mentioned to move between areas.
On some distributions F5 (Text Area) and Shift+F5 (Tools Area) work fine, but Ctrl+F5 (Project Notes Area) will not work. It leaves the cursor in the area it is.
What works fine, is the
* Tab key: moves between all areas counter-clockwise,
* Shift+Tab: moves cursor between areas clockwise,
with the exception text area to references area. In this case Shift+Tab has to used twice, as using it once goes to the verse box of the toolbar.