I posted about this a while ago but can't find the thread now. I thought you said you were looking at the issue and the blurb on the app update mentions "photos" but no change after updating.
In the app, clicking on the + to upload a pic brings up my camera roll in a completely random order, with pics from when my son was a baby - he just turned 6! But it's not reverse chronological. It's just random. Totally unusuable.
I am on an iPhone, latest software update, using app.