Debugger not showing attribute values

The problem is when I enter a function by single step the right panel that shows the current status of the values is blank, however when I go into some other function it then reappears and I'm able to see the variables and its values/contents. Also when I mouse hover over a variable there is nothing there and I get a tool tip "Expression to Complex" . 

This problem is intermittent and has been occuring to everyone on our team for sometime now.  Sometimes, stepping through a method, values will be shown and then on a next step will disappear. Adding code in unrelated locations on the file can cause this problem to get better or worse.