Usually I cancel the Dbus message and answer all incoming texts through Google Voice's mobile site.

I just use Modest for notifications and nothing else.

A few times, by accident, I'll open a message up and it works fine for me.

But yeah, you're right.

Clicking on the Dbus notification now causes an unable to retrieve message error.

Opening a message inside of Modest causes an error of it not being on the server.

I can't remember the last time I opened a message with Modest but I doubt it was any longer than two weeks ago.