Why do Auto List members keep disconnecting?

Question

In Visual Studio 2010, sometimes in the same session (without restarting the application), intellisense is disabled. The checkboxes in Tools> Options> Edit Text> C #> End Claims, Automatic List Members, and Parameter Information will not be checked.

I also have Resharper installed. As far as I know, Resharper does not control this setting.

This can happen a couple of times a day for me, without restarting Visual Studio.

Answer 1

There seems to be a documented bug for Resharper: http://blogs.jetbrains.com/dotnet/2011/02/resharper-513-is-released/

Excerpts:

ReSharper 5.1.3 provides exactly one bug fix that prevents disabling Parameter Information and auto-completion when you're using native Visual Studio IntelliSense (as opposed to ReSharper IntelliSense). Please note that if you're been using ReSharper IntelliSense as a workaround in 5.1.2, as soon as you switch back to Visual Studio IntelliSense, you'll have to initially set Auto-list members and Parameter information check boxes manually, but that is only required once. 

Answer 2

I noticed this in ReSharper 7.1.1, at least with regard to javascript intellisense having the same problem. My workaround was to tell Reshaper to use "Visual Studio" as the parameter for Intellisense Resharper> Options> Intellisense> General. (you can still call Resharper intellisense with Ctrl + Alt + Space)

As soon as I did this, it saved my Visual Studio settings for verification.