When I open git project in SourceTree and the path has Cyrillic letters in it, when I click on the Rebase children of <commit> interactively in the history of commits:

It opens the interactive rebase window but it's empty:

If I then put my git project in the place, which doesn't have any Cyrillic letters in the path, it opens the interactive rebase window with all the commits as it's supposed to:

Here's a video demonstration of the bug: https://www.youtube.com/watch?v=Df-hfD6gK0A

As you can see in the video, when the path is H:\Books\Programming\C#\Читаемые\Mastering WPF, it doesn't show any commits in the list when I click on the Rebase children of <commit> interactively... menu. After I copy the git project to the __H:\Books\Programming\C#\Mastering WPF path and then click on the Rebase children of <commit> interactively... menu, commits show up in the list as they're supposed to.