Text layout is wrong in RTL page. See e.g. http://www.debka.co.il
I forgot to mention that the problem is visible only if you view the page in a small window. You cannot scroll to the left to see the rest of the page content.
Created attachment 24332 [details]
Reduction of this bug.
This reduction shows the bug in a minimal test case. With the dir attribute set to "rtl", resizing the window smaller than 600px wide will cause text to be cropped by the left edge of the window with no scroll bar available. Changing the dir attribute to "ltr" causes a scroll bar to appear as expected when the window is resized narrower than 600px.
this is now Bug 23556 i think
*** This bug has been marked as a duplicate of bug 23556 ***