Keys forgotten when one changes sms app?

[tsjk]

This is a great initiative. We need a Silence replacement.

I have however found that encrypted messages can no longer be read after I change to another messaging app (to view an mms, or whatever) and then switch back. This is very much a show-stopper for normal people, I think. This has been observed on two different phones. Am I doing something wrong, or is this something to be put on a road map?