If two code blocks are nearly identical, switching between the code blocks shows the code as being graphically merged.  That is, one code block is fading out and the other code block is fading in, but they both get hung so I can basically see both code blocks at the same time.  I have to switch to a completely different code block with completely different code in order to get the Editor to completely redrawn the code in the Editor.

Hope that makes sense!

Stefan