I noticed everyone who said they had a problem with the sms not getting appended to the thread has Sprint. Is this a coincidence, or is it just a problem on the Sprint TP2? I have Verizon, and I haven't experienced this problem.
On another note, since this thread is technically titled "Problems with Manilla SMS", I'd like to contribute what I've noticed. Links are no longer clickable in the thread. i.e. Phone numbers or url's. In the WM SMS threader, you can click on a link someone sent, but you can't click in the Manilla threader. Not that much of a big deal for me, but just something I noticed. Also, I can't seem to select text. In WM threader, I can select text, copy, etc... But not the Manilla threader.