Common enough where when I had my issue of not being able to set an app as default, a couple minutes into searching I found this:
Which ended up being how I solved it. It's an unintended side effect, for sure.
The stuff I posted about the version was just that. In the update notes it wasn't clear that when Lollipop support was added, that it was still ok for KitKat users to use. That's all. The module works great aside from the above side effect. I'm not ****ting on your work here. Just giving you a heads up about maybe including a notice to users about that being a possible issue.
I had added a messagebox when you select an app which is able to receive SMS. Cant do anything if it is ignored