Occasionally when I end a blockquote when writing a post something weird happens to the screen. Here is a screenshot. It doesn't seem to cause any problems, but it is weird. I would appreciate some help if anyone knows why this is happening.
To be specific, when I end the blockquote, this happens to the screen and it goes away when I scroll up or down or press a key. Again, it isn't really a problem, but I would really like to know what is happening. I did look around the WordPress support website and did Google searches and I couldn't find anything similar.
The blog I need help with is canadianrattlesnake.wordpress.com.