Tapping the post form submit button results in an error that says to pick one of the ten communities listed which I guess are those that horizontally scroll under the "community name" form field. So I guess I can only post to those.. not sure why it's limited. It's a bug unless I missed a new setting.

I had to create this post using Jerboa 😞

Connect version 1.0.69. Also applies to 1.0.71.