Auto-competion list - panel not dockable

For forgetful people like me, to check that what I want to write is actually on the list requires opening the list box.

However, I find it cannot be kept open for quick reference such as this because it becomes the active window. It has be closed before you can continue writing.

Would it help to have a tabbed panel in the Inspector instead, enabling quick reference, not letting it prevent a return to the edit panel?