Bug found so far

First let me start by saying elemental is a cool game and great fun.

However I find the following are either bugs or odd decisions.

1. All my off spring regenerate 4 mana and life a turn during combat, but my channeler doesn't.

2. I built a Dragon Roost but still can't recruit dragons (does this work in a special way e.g. you don't just train them.

3. As Empire I can get a tech that exposes darkling towns but can't build on them because it always tells me I don't have the tech.

4. In tactical battle the selection of tiles to move too is sometimes a little off.