1. Open a file from a git repository.
2. Select "Window" -> "Split" from the menu.
3. Press Alt+G, Alt+B to get a git blame.
   It will be shown in the active editor split.
4. Place the cursor in the other editor split.
5. Press Alt+G, Alt+B again.
   Creator will refresh the git blame in the previous editor split.

I had expected that this would show git blame in the second editor split, too. The use case is to open a file, select to different areas of code and then show git blame for both of these areas.