Signature changes and undo...

[safari70]

Something funny is happening with signature changes (in global tracks) and undos:

1- Add a signature change in the global track (using pencil tool) at some location

2- Record an audio take on some track

3- Now, if you undo, i would expect only the last step, i.e. audio take, to be removed, however, what i'm seeing is that both audio take *and* the sig change are gone!

 

Anyone knows if this is expected behavior, if not how do i make those signature changes 'stick' in the global track and not to removed?