Regression[2.14.3->2.15]: Interactive rebase fails if submodule is modified

I can't reproduce this with a minimal example, but it happens in my project.

What I tried to do for reproducing is: rm -rf super sub mkdir sub; cd sub; git init git commit --allow-empty -m 'Initial commit' mkdir ../super; cd ../super git init git submodule add ../sub touch foo; git add foo sub git commit -m 'Initial commit' touch a; git add a; git commit -m 'a' touch b; git add b; git commit -m 'b' cd sub; git commit --allow-empty -m 'New commit'; cd .. git rebase -i HEAD^^

Then drop a.

In my project I get: error: cannot rebase: You have unstaged changes.

This works fine with 2.14.3.

- Orgad