Olive manipulates dirstate. Is this a bug?

System: Ubuntu 6.06 with bzr and bzr-gtk 0.17

When you execute the following commands you can see that starting olive changes the file dirstate. I've investigated that with pdb. As far as I remember (it's a few days ago) it is caused by a call to changes_from in olive/__init__.py:_load_right.
I'm not so fammiliar with bzr's internals. Is this ...
* a bug?
* dangerous?
* harmless?

Commands for reproducing this behaviour:

mkdir dirstate_manipulation
cd dirstate_manipulation/
mkdir a.orig
cd a.orig/
bzr init
mkdir b
cd b
touch c
cd ..
bzr add
bzr commit -m blah
cd ..
cp -a a.orig a
cd a
olive-gtk
# It's sufficient to close olive immideately.
cd ..
diff -r *