Showing completion list after "new " and others?

Without Resharper, if I type 

Dictionary<string,string> a = new

right after I press the spacebar, the completion list pops up.

But when Resharper is installed, it does not. I have waited for a few seconds, but it did not. I had to press Ctrl+Space. There are several similar cases where the completion does not automatically pops up as it did without Resharper. How can I fix this?