I confirm there is a slight bug already talked about, in PCManFM when using this theme. I wanted to change it but didn't find one as nice and light. I will try to replace it with another one. I have thought of Equinox_Light which belongs to a bigger package, but it could be trimmed, or it could be even split in several packages if a packager would want to look at it. It's a nice theme.
If libexo is faulty, IgnorantGuru will tell more about it when he will have tested I suppose ? Else, Elegant Aurora has not been updated since it's creation. I had looked recently.
If you find another gtk theme (2 and 3 or 2/3 friendly) at box-look.org or gnome-look.org, or deviant art, which might be interesting please let me know ?
The problem as I remember it is related to right-click in the file manager, which does not stay still, or something like that, is that correct ?