1. Create new presentation
2. Create two slides
3. write some text on first and second
5. First slide is without text (!!!)
6. Go to next slide. Text is normal
7. Go back to 1st slide. Text is normal too.
Effect for new and old presentation. Export is ok. Import ppt shows the same one.
So effect work once only first time. The second monitor with manipulators work nice.
*** This bug has been marked as a duplicate of bug 88111 ***