Hello Sorin,
  Hello Clemens,
 Make sure you are not using IE Compatibility mode. As far as  I know, the
 bottom tabs like comments, attachments look ugly because Compatibility Mode
 is enabled. 
Ahem, cough, cough, that was actually the cause of my problems :-/
 IE8 is supported by XWiki 4 and 5, so contributions are more than welcomed.
 Before reporting an issue or making a pull request, please check
 
http://jira.xwiki.org if they have not been already reported.
  
In case I really start working on something I will better check the issue tracker before
...
however for now everything looks ok from here.
Thanks,
Clemens
  Best regards,
 Sorin B.
 On Thu, Aug 15, 2013 at 1:13 PM, Clemens Klein-Robbenhaar <
 c.robbenhaar(a)espresto.com> wrote:
>
> I am wondering about the support for IE 8 in XWiki5.x
>
> There are a few layout bugs in XWiki5 (actually been there in XWiki4 as
> much as I can remember)
> that do not directly hamper functionality but simply look ugly, like:
>
>  - scrollbars around the outer frame of the Editor
>  - tabs for comments, etc at the bottom of the page
>    are stacked on top of each other instead of displayed left to right
>
> I am thinking of patching things for my instance so they look better in
> IE8,
> and I am wondering if IE 8 is still officially supported, and if yes,
> if patches for such layout glitches are of any interest.
>
> Cheers,
> Clemens
>