Description of problem:
I can't scroll mail who have animated gifs inside with a scroll-mouse. To each change of gif, the mail returns automatically at the beginning.

Version-Release number of selected component (if applicable):
evolution 2.24.2-1

How reproducible:
Always : I scroll a mail with animated gif. I have the same problème on preview window and when I open the mail.

Steps to Reproduce:
1. Select the mail or open it.
2. Scroll to view mail.
3. Wait the change of gif.
  
Actual results:
The mail returns always to beginning. It's impossible read a mail with gif.

Expected results:
Refresh the gif without automatic return at mail top.