Delete Key Issue when using Code Behind

Delete Key Issue when using Code Behind

This isn't a code but it's an annoying enough problem to ask about.
Has anyone ran into an issue using the delete key while in code behind? My
delete button works when deleting text, but sometimes there is an issue
when using it to remove empty lines and condense code. I will press the
key, it removes 1 line, then the delete button won't delete another line
until i lose focus of my current line and then reenter my line.
To clarify i'll try to describe the situation using some pseudo code.
line1.focus => press delete removes empty line, press delete again does
not remove next line
line1.blur, line1.focus => press delete works,
loop
It seems to be Visual Studio 2012 issue, because it doesn't seem the issue
is happening with 2010 express