Is there a way to make SourceTree show diffs of text files?

[ken_paulson]

I have a text file in my repo that tracks recent changes I've made from a user point of view. After editing the file it is marked as changed in the "Unstaged files" list, but when I select it I don't see the changes in the panel next to it. Instead I see a green circle with a check in it next to the file name (Readme.txt).

Selecting lua or any other source files work as expected. Latest SourceTree for Windows (Version 1.6.12.0).

[ken_paulson]

It turns out the problem was that my text file was UTF-16 and the diff engine can't handle that. I converted to UTF-8 and all is working as expected.