I've noticed (and become quite annoyed) by the caret constantely jumping back whenever I press space.
For example when I type the following:
private string MyMethod(...)
It sometimes becomes something like
privates tring MyMethod(...)
As I type, I can see the caret jump one character back, whenever I type a space. So depending on how fast I type, it sometimes put the first letter of the next word next to the first word...
It seems like the performance of the latest EAP has decreased a lot (for me at least). The earlier builds didn't behave this way.