TOPIC: Comments don't cut off where they should

I have a problem with comments on my site. Take a look at the picture. Comments are running out of the site. I'd like to make them to cut at the red line. How should I fix it?

That is a known but with all templates comming with 3.26 .
With 4.0 I've introduced a new template called: modern - it doesn't have this problem, but it is also not available in black, in blue and so on.

It will take a little time to rewrite the old templates. So perhaps the best solution for you right now will be to turn reply to comment.