Layout issue with non-latin pages on b5

Greetings, I noticed that in certain cases such pages are rendered incorrectly, without white background. Comparing HTML of correct and incorrect page I noticed that broken one uses <div class="clearfloat"> while correct one mentions <div class="clearfloats">. Notice the "s" in the correct class name. Changing class name with firefox dom explorer fixes the layout. By removing some content I could find a point where adding another non-latin character makes things go wrong. Adding ASCII works fine though. Is it a known issue? If not, can it be addressed in scope of 1.0development? -- Best regards, Pavel