I like you get irritated with these changes in the size, colors, etc., of listings. I have written support and gotten responses, but to me they really have no rhyme or reason at all.
There are other posts on this also. I have and will continue writing with examples of listings. Please do same as I was given impression that these are rare and isolated issues.
Also, please make sure before you write to clear your cache and cookies, as that is usually first suggestion.. just write in email that you have already done that (do really do it, it sometimes helps with some issues) and save yourself an email back.
Also, did find out that the large on internet explorer could be different size viewing in Mozilla??
HOpe this helps.. please file requests. I file on everything now
Vickie