Comments field gives no indication of how large a comment may be, and no indication when you've exceeded that limit

When commenting on a bug, there's a chance that a comment could be rather long. See bug #745470 comments 12 and 13 (note, it's a private bug).

Those comments were supposed to be one comment, however, I finally discovered that I had to break it into two comments to get LP to accept it.

If there are constraints on the amount of characters or words that can go into a comment, that's fine. But the comment box gives absolutely NO indication of a size limit.

Many websites that use these multi-line text boxes provide a warning saying that a maximum of X characters or words are allowed, and many even provide a counter that tells the user they have used Y of Z characters.

Once that limit is reached, the user is either prevented from adding more text, or the counter turns red indicating they've gone over the limit.

With Launchpad, nothing happens. What the user gets instead, is a useless and unfriendly "Error 400" page. It gives NO information other than "Your Broswer made a bad request" which doesn't hit to the user at all that they've actually just typed too much stuff.

So Please add some mechanism for explaining or warning the user that this is happening, rather than simply leaving them confused with strange webserver errors that don't offer any explanation.