`git stash apply` deleted a random dir from my working copy

Hi.

I just tried `git stash save` for the first time. It worked fine. Then
I tried `git stash apply` and while my uncommitted changes were
restored, another effect was that a random dir from the root of my
working copy was deleted. I don't know why it chose that exact dir,
there's lots of other dirs like it in the root.

`git stash save` output and shortened `git stash apply` output are attached.

Note: The dir that got deleted was a committed and pushed dir. It had
no uncommitted local changes.

It's not a huge problem, because there was no data loss - I can pull
the deleted data back from the repo. But I'd still like to know why
this problem happened.

TIA, Stefan Monov