Hi Kadri,
If they're all in the same place then what's probably happening is that one of the unselected bounding boxes is drawing on top of the selected one. This means the white bounding box is drawing on top of the yellow bounding box. This is something I'm aware of. Updating your graphics driver won't help with this. Thanks for reporting the problem, I'll look into improving things for the next release.
Regards,
Jo