[Typo3] htmlarea RTE acronym

[Ismael BIDAU]

I'm able to add acronym on root page.
I'm able to add Acronym icon on RTE bar.

When I want to use acronym, it shows me a window to choose an acronym 
create at the root page. I select one and it appears in RTE window. 
Seems to work and it's recorded.

But when I see FE code, there is :
<acronym title="École Nationale Supérieure de Création 
Industrielle">ENSCI</acronym>

instead of :
<acronym title="École Nationale Supérieure de Création 
Industrielle">ENSCI</acronym>

Not seem a RTE problem because BE RTE works. A problem with ccs_style_
content ?

Thanks a lot for your help.

Ismaël BIDAU
webmaster / www.ensci.com