Step to Reproduce
1)Start a impress
2)Draw a drawing, input some words.

A:
3)Format->area, select Transparency tab in area dialog, select Gradient.

B:
3)Format->area, select Hatching tab in area dialog, select any hatching and 
click OK

C:
3)Format0>area, select Gradients tab in area dialog, select any gradient and 
click OK

4)Select the words, add any custom animation (e.g. fly in).
5)Press F5.
You will find
A: the color of drawing is lost.
B: the hatching is splited into two parts.
C: there are not animation to a part of words.