See this picture (I will also attach it)
I start to type the main area, then the city, then the location and finaly the name of the facts found.
Then I have to fine them again, its very hard, as I can not read the hole line.
Please make the combobox show the hole line, then opening the item.
Actually, all you need to do is make the Edit Person window wider.
Grab the lower right corner of the window and move it to the right and release it.
You will now have a wider window and you can see all your sources unchopped.
Thanks for the input.
We will fix it for the one of the next versions